| Pyrus ioensis (Alph. Wood) J. H. Carruth var. texana (Rehder) L. H. Bailey | Malus ioensis (Alph. Wood) Britton | | i | Pyrus ioensis (Alph. Wood) J. H. Carruth var.texana (Rehder) L. H. Bailey | Malus ioensis (Alph. Wood) Britton | 28633 | 23246 |
| Pyrus alnifolia (Siebold & Zucc.) Franch. & Sav. | Sorbus alnifolia (Siebold & Zucc.) K. Koch | | | Pyrus alnifolia (Siebold & Zucc.) Franch. & Sav. | Sorbus alnifolia (Siebold & Zucc.) K. Koch | 30437 | 34992 |
| Pyrus alpina Willd. | ×Sorbaronia alpina (Willd.) C. K. Schneid. | | | Pyrus alpina Willd. | Sorbaronia alpina (Willd.) C. K. Schneid. | 30438 | 50067 |
| Pyrus americana DC. | Sorbus decora (Sarg.) C. K. Schneid. | | | Pyrus americana DC. | Sorbus decora (Sarg.) C. K. Schneid. | 30439 | 35015 |
| Pyrus amygdaliformis Vill. var. persica Bornm. | Pyrus spp. | | i | Pyrus amygdaliformis Vill. var.persica Bornm. | Pyrus spp. | 30440 | 300499 |
| Pyrus amygdaliformis Vill. var. sinaica Koehne | Pyrus spinosa Forssk. | | i | Pyrus amygdaliformis Vill. var.sinaica Koehne | Pyrus spinosa Forssk. | 30441 | 448614 |
| Pyrus angustifolia Aiton | Malus angustifolia (Aiton) Michx. | | | Pyrus angustifolia Aiton | Malus angustifolia (Aiton) Michx. | 30442 | 23215 |
| Pyrus arbutifolia (L.) L. f. | Aronia arbutifolia (L.) Pers. | | | Pyrus arbutifolia (L.) L. f. | Aronia arbutifolia (L.) Pers. | 30443 | 4245 |
| Pyrus arbutifolia (L.) L. f. var. nigra Willd. | Aronia melanocarpa (Michx.) Elliott | | i | Pyrus arbutifolia (L.) L. f. var.nigra Willd. | Aronia melanocarpa (Michx.) Elliott | 30444 | 4247 |
| Pyrus aria (L.) Ehrh. | Sorbus aria (L.) Crantz | | | Pyrus aria (L.) Ehrh. | Sorbus aria (L.) Crantz | 30445 | 34996 |
| Pyrus aria (L.) Ehrh. var. cretica Lindl. | Sorbus umbellata (Desf.) Fritsch | | i | Pyrus aria (L.) Ehrh. var.cretica Lindl. | Sorbus umbellata (Desf.) Fritsch | 30446 | 35074 |
| Pyrus aromatica Kikuchi & Nakai | Pyrus ussuriensis Maxim. | | | Pyrus aromatica Kikuchi & Nakai | Pyrus ussuriensis Maxim. | 30447 | 30607 |
| Pyrus aucuparia (L.) Gaertn. | Sorbus aucuparia L. subsp. aucuparia | | | Pyrus aucuparia (L.) Gaertn. | Sorbus aucuparia L. subsp. aucuparia | 30449 | 460360 |
| Pyrus aucuparia (L.) Gaertn. var. dulcis (Kraetzl) Asch. & Graebn. | Sorbus aucuparia L. subsp. aucuparia | | i | Pyrus aucuparia (L.) Gaertn. var.dulcis (Kraetzl) Asch. & Graebn. | Sorbus aucuparia L. subsp. aucuparia | 30450 | 460360 |
| Pyrus baccata L. | Malus baccata (L.) Borkh. var. baccata | | | Pyrus baccata L. | Malus baccata (L.) Borkh. var.baccata | 30451 | 320217 |
| Pyrus baccata L. var. genuina Regel | Malus baccata (L.) Borkh. var. baccata | | i | Pyrus baccata L. var.genuina Regel | Malus baccata (L.) Borkh. var.baccata | 30454 | 320217 |
| Pyrus baccata L. var. himalaica Maxim. | Malus baccata (L.) Borkh. var. himalaica (Maxim.) C. K. Schneid. | | i | Pyrus baccata L. var.himalaica Maxim. | Malus baccata (L.) Borkh. var.himalaica (Maxim.) C. K. Schneid. | 30455 | 23221 |
| Pyrus baccata L. var. mandshurica Maxim. | Malus mandshurica (Maxim.) Kom. ex Skvortsov | | i | Pyrus baccata L. var.mandshurica Maxim. | Malus mandshurica (Maxim.) Kom. ex Skvortsov | 30456 | 104672 |
| Pyrus betulifolia Bunge | | a | | Pyrus betulifolia Bunge | | 30458 | |
| Pyrus boissieriana Buhse | | a | | Pyrus boissieriana Buhse | | 30459 | |
| Pyrus bollwylleriana DC. | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus bollwylleriana DC. | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30460 | 34991 |
| Pyrus ×bretschneideri Rehder | | a | | Pyrus bretschneideri Rehder | | 30462 | |
| Pyrus ×calleryana Decne. | | a | | Pyrus calleryana Decne. | | 30463 | |
| Pyrus ×calleryana Decne. var. dimorphophylla (Makino) Koidz. | Pyrus dimorphophylla Makino | | i | Pyrus calleryana Decne. var.dimorphophylla (Makino) Koidz. | Pyrus dimorphophylla Makino | 30464 | 104688 |
| Pyrus ×calleryana Decne. var. fauriei (C. K. Schneid.) Rehder | Pyrus fauriei C. K. Schneid. | | i | Pyrus calleryana Decne. var.fauriei (C. K. Schneid.) Rehder | Pyrus fauriei C. K. Schneid. | 30465 | 30495 |
| Pyrus ×calleryana Decne. f. graciliflora Rehder | Pyrus ×calleryana Decne. | | i | Pyrus calleryana Decne. f. graciliflora Rehder | Pyrus calleryana Decne. | 30466 | 30463 |
| Pyrus ×calleryana Decne. f. tomentella Rehder | Pyrus ×calleryana Decne. | | i | Pyrus calleryana Decne. f. tomentella Rehder | Pyrus calleryana Decne. | 30467 | 30463 |
| Pyrus ×canescens Spach | | a | | Pyrus canescens Spach | | 30468 | |
| Pyrus cathayensis Hemsl. | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | | Pyrus cathayensis Hemsl. | Pseudocydonia sinensis (Thouin) C. K. Schneid. | 30469 | 318589 |
| Pyrus chamaemespilus (L.) Ehrh. | Sorbus chamaemespilus (L.) Crantz | | | Pyrus chamaemespilus (L.) Ehrh. | Sorbus chamaemespilus (L.) Crantz | 30471 | 35011 |
| Pyrus sinensis Lindl. | Pyrus ussuriensis Maxim. | | | Pyrus sinensis Lindl. | Pyrus ussuriensis Maxim. | 30472 | 30607 |
| Pyrus sinensis (Thouin) Spreng. | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | | Pyrus sinensis (Thouin) Spreng. | Pseudocydonia sinensis (Thouin) C. K. Schneid. | 30473 | 318589 |
| Pyrus communis L. | | a | | Pyrus communis L. | | 30474 | |
| Pyrus communis L. var. cordata (Desv.) Hook. f. | Pyrus cordata Desv. | | i | Pyrus communis L. var.cordata (Desv.) Hook. f. | Pyrus cordata Desv. | 30475 | 30479 |
| Pyrus communis L. var. pyraster L. | Pyrus communis L. subsp. pyraster (L.) Ehrh. | | i | Pyrus communis L. var.pyraster L. | Pyrus communis L. subsp. pyraster (L.) Ehrh. | 30476 | 448613 |
| Pyrus ×complexa Rubtzov | | a | | Pyrus complexa Rubtzov | | 30478 | |
| Pyrus cordata Desv. | | a | | Pyrus cordata Desv. | | 30479 | |
| Pyrus coronaria L. | Malus coronaria (L.) Mill. | | | Pyrus coronaria L. | Malus coronaria (L.) Mill. | 30480 | 23225 |
| Pyrus coronaria L. var. ioensis Alph. Wood | Malus ioensis (Alph. Wood) Britton | | i | Pyrus coronaria L. var.ioensis Alph. Wood | Malus ioensis (Alph. Wood) Britton | 30481 | 23246 |
| Pyrus cossonii Rehder | | a | | Pyrus cossonii Rehder | | 30482 | |
| Pyrus crataegifolia Savi | Malus florentina (Zuccagni) C. K. Schneid. | | | Pyrus crataegifolia Savi | Malus florentina (Zuccagni) C. K. Schneid. | 30483 | 23232 |
| Pyrus cydonia L. | Cydonia oblonga Mill. | | | Pyrus cydonia L. | Cydonia oblonga Mill. | 30484 | 12779 |
| Pyrus decipiens Bechst. | Sorbus latifolia (Lam.) Pers. | | | Pyrus decipiens Bechst. | Sorbus latifolia (Lam.) Pers. | 30485 | 35041 |
| Pyrus decurrens ined.? | Pyrus spp. | | | Pyrus decurrens ined.? | Pyrus spp. | 30486 | 300499 |
| Pyrus delavayi Franch. | Docynia delavayi (Franch.) C. K. Schneid. | | | Pyrus delavayi Franch. | Docynia delavayi (Franch.) C. K. Schneid. | 30487 | 14423 |
| Pyrus discolor Maxim. | Sorbus discolor (Maxim.) Maxim. | | | Pyrus discolor Maxim. | Sorbus discolor (Maxim.) Maxim. | 30489 | 35017 |
| Pyrus diversifolia Bong. | Malus fusca (Raf.) C. K. Schneid. | | | Pyrus diversifolia Bong. | Malus fusca (Raf.) C. K. Schneid. | 30490 | 23239 |
| Pyrus elaeagrifolia Pall. | | a | | Pyrus elaeagrifolia Pall. | | 30491 | |
| Pyrus elaeagrifolia Pall. var. kotschyana (Boiss. ex Decne.) Boiss. | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | | i | Pyrus elaeagrifolia Pall. var.kotschyana (Boiss. ex Decne.) Boiss. | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | 30493 | 104690 |
| Pyrus ×eleyi Bean | Malus ×purpurea (A. Barbier) Rehder | | | Pyrus eleyi Bean | Malus purpurea (A. Barbier) Rehder | 30494 | 23264 |
| Pyrus fauriei C. K. Schneid. | | a | | Pyrus fauriei C. K. Schneid. | | 30495 | |
| Pyrus folgneri (C. K. Schneid.) Bean | Sorbus folgneri (C. K. Schneid.) Rehder | | | Pyrus folgneri (C. K. Schneid.) Bean | Sorbus folgneri (C. K. Schneid.) Rehder | 30496 | 35022 |
| Pyrus foliolosa Wall. | Sorbus foliolosa (Wall.) Spach | | | Pyrus foliolosa Wall. | Sorbus foliolosa (Wall.) Spach | 30497 | 35023 |
| Pyrus fusca Raf. | Malus fusca (Raf.) C. K. Schneid. | | | Pyrus fusca Raf. | Malus fusca (Raf.) C. K. Schneid. | 30498 | 23239 |
| Pyrus germanica (L.) Hook. f. | Mespilus germanica L. | | | Pyrus germanica (L.) Hook. f. | Mespilus germanica L. | 30499 | 24182 |
| Pyrus gharbiana Trab. | | a | | Pyrus gharbiana Trab. | | 30500 | |
| Pyrus gracilis Siebold & Zucc. | Sorbus gracilis (Siebold & Zucc.) K. Koch | | | Pyrus gracilis Siebold & Zucc. | Sorbus gracilis (Siebold & Zucc.) K. Koch | 30502 | 35024 |
| Pyrus harrowiana Balf. f. & W. W. Sm. | Sorbus insignis (Hook. f.) Hedl. | | | Pyrus harrowiana Balf. f. & W. W. Sm. | Sorbus insignis (Hook. f.) Hedl. | 30503 | 35032 |
| Pyrus heterophylla Pott | ×Sorbaronia hybrida (Moench) C. K. Schneid. | | | Pyrus heterophylla Pott | Sorbaronia hybrida (Moench) C. K. Schneid. | 30504 | 34987 |
| Pyrus heterophylla Regel & Schmalh. | Pyrus regelii Rehder | | | Pyrus heterophylla Regel & Schmalh. | Pyrus regelii Rehder | 30505 | 30570 |
| Pyrus ×hondoensis Nakai & Kikuchi | | a | | Pyrus hondoensis Nakai & Kikuchi | | 30506 | |
| Pyrus hostii (J. Jacq.) hort. ex K. Koch, nom. inval. | Sorbus ×hostii (J. Jacq.) Heynh. | | | Pyrus hostii (J. Jacq.) hort. ex K. Koch, nom. inval. | Sorbus hostii (J. Jacq.) Heynh. | 30507 | 35027 |
| Pyrus hybrida Moench | ×Sorbaronia hybrida (Moench) C. K. Schneid. | | | Pyrus hybrida Moench | Sorbaronia hybrida (Moench) C. K. Schneid. | 30508 | 34987 |
| Pyrus indica Wall. | Docynia indica (Wall.) Decne. | | | Pyrus indica Wall. | Docynia indica (Wall.) Decne. | 30509 | 14425 |
| Pyrus insignis Hook. f. | Sorbus insignis (Hook. f.) Hedl. | | | Pyrus insignis Hook. f. | Sorbus insignis (Hook. f.) Hedl. | 30510 | 35032 |
| Pyrus intermedia Ehrh. | Sorbus intermedia (Ehrh.) Pers. | | | Pyrus intermedia Ehrh. | Sorbus intermedia (Ehrh.) Pers. | 30511 | 35033 |
| Pyrus irregularis Münchh. | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus irregularis Münchh. | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30512 | 34991 |
| Pyrus japonica Thunb. | Chaenomeles japonica (Thunb.) Lindl. ex Spach | | | Pyrus japonica Thunb. | Chaenomeles japonica (Thunb.) Lindl. ex Spach | 30514 | 10007 |
| Pyrus kansuensis Batalin | Malus kansuensis (Batalin) C. K. Schneid. | | | Pyrus kansuensis Batalin | Malus kansuensis (Batalin) C. K. Schneid. | 30515 | 23248 |
| Pyrus keissleri (C. K. Schneid.) H. Lév. | Sorbus keissleri (C. K. Schneid.) Rehder | | | Pyrus keissleri (C. K. Schneid.) H. Lév. | Sorbus keissleri (C. K. Schneid.) Rehder | 30517 | 35036 |
| Pyrus koehnei C. K. Schneid. | | a | | Pyrus koehnei C. K. Schneid. | | 30518 | |
| Pyrus korshinskyi Litv. | | a | | Pyrus korshinskyi Litv. | | 30519 | |
| Pyrus kotschyana Boiss. ex Decne. | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | | | Pyrus kotschyana Boiss. ex Decne. | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | 30520 | 104690 |
| Pyrus kumaoni Decne. | Pyrus pashia Buch.-Ham. ex D. Don | | | Pyrus kumaoni Decne. | Pyrus pashia Buch.-Ham. ex D. Don | 30521 | 30551 |
| Pyrus lanata D. Don | Sorbus lanata (D. Don) Schauer | | | Pyrus lanata D. Don | Sorbus lanata (D. Don) Schauer | 30522 | 35038 |
| Pyrus lanuginosa (Kit.) DC. | Sorbus aucuparia L. subsp. aucuparia | | | Pyrus lanuginosa (Kit.) DC. | Sorbus aucuparia L. subsp. aucuparia | 30523 | 460360 |
| Pyrus ×lecontei Rehder | | a | | Pyrus lecontei Rehder | | 30524 | |
| Pyrus lemoinei R. N. Notcutt ex C. H. Curtis | Malus ×purpurea (A. Barbier) Rehder | | | Pyrus lemoinei R. N. Notcutt ex C. H. Curtis | Malus purpurea (A. Barbier) Rehder | 30525 | 23264 |
| Pyrus lobata K. Koch | Docynia indica (Wall.) Decne. | | | Pyrus lobata K. Koch | Docynia indica (Wall.) Decne. | 30527 | 14425 |
| Pyrus longipes Coss. & Durieu | Pyrus cossonii Rehder | | | Pyrus longipes Coss. & Durieu | Pyrus cossonii Rehder | 30528 | 30482 |
| Pyrus malifolia Spach | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus malifolia Spach | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30529 | 34991 |
| Pyrus malus L. | Malus domestica (Suckow) Borkh. | | | Pyrus malus L. | Malus domestica (Suckow) Borkh. | 30530 | 104681 |
| Pyrus malus L. var. paradisiaca L. | Malus pumila Mill. | | i | Pyrus malus L. var.paradisiaca L. | Malus pumila Mill. | 30531 | 23261 |
| Pyrus mamorensis Trab. | | a | | Pyrus mamorensis Trab. | | 30532 | |
| Pyrus matsumurana Makino | Sorbus matsumurana (Makino) Koehne | | | Pyrus matsumurana Makino | Sorbus matsumurana (Makino) Koehne | 30533 | 35042 |
| Pyrus maulei Mast. | Chaenomeles japonica (Thunb.) Lindl. ex Spach | | | Pyrus maulei Mast. | Chaenomeles japonica (Thunb.) Lindl. ex Spach | 30534 | 10007 |
| Pyrus melanocarpa (Michx.) Willd. | Aronia melanocarpa (Michx.) Elliott | | | Pyrus melanocarpa (Michx.) Willd. | Aronia melanocarpa (Michx.) Elliott | 30537 | 4247 |
| Pyrus ×michauxii Bosc ex Poir. | | a | | Pyrus michauxii Bosc ex Poir. | | 30540 | |
| Pyrus microphylla (Wenz.) Wall. ex Hook. f. | Sorbus microphylla Wenz. | | | Pyrus microphylla (Wenz.) Wall. ex Hook. f. | Sorbus microphylla Wenz. | 30541 | 35047 |
| Pyrus minima Ley | Sorbus minima (Ley) Hedl. | | | Pyrus minima Ley | Sorbus minima (Ley) Hedl. | 30542 | 35048 |
| Pyrus niedzwetzkyana (Dieck) Hemsl. | Malus pumila Mill. | | | Pyrus niedzwetzkyana (Dieck) Hemsl. | Malus pumila Mill. | 30543 | 23261 |
| Pyrus nigra (Willd.) Sarg. | Aronia melanocarpa (Michx.) Elliott | | | Pyrus nigra (Willd.) Sarg. | Aronia melanocarpa (Michx.) Elliott | 30544 | 4247 |
| Pyrus ×nivalis Jacq. | | a | | Pyrus nivalis Jacq. | | 30545 | |
| Pyrus ×nivalis Jacq. var. elaeagrifolia (Pall.) C. K. Schneid. | Pyrus elaeagrifolia Pall. subsp. elaeagrifolia | | i | Pyrus nivalis Jacq. var.elaeagrifolia (Pall.) C. K. Schneid. | Pyrus elaeagrifolia Pall. subsp. elaeagrifolia | 30546 | 448616 |
| Pyrus ×nivalis Jacq. var. kotschyana (Boiss. ex Decne.) C. K. Schneid. | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | | i | Pyrus nivalis Jacq. var.kotschyana (Boiss. ex Decne.) C. K. Schneid. | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | 30547 | 104690 |
| Pyrus nussia Buch.-Ham. ex D. Don | Photinia nussia (Buch.-Ham. ex D. Don) Kalkman | | | Pyrus nussia Buch.-Ham. ex D. Don | Photinia nussia (Buch.-Ham. ex D. Don) Kalkman | 30548 | 320271 |
| Pyrus oblongifolia Spach | Pyrus spinosa Forssk. | | | Pyrus oblongifolia Spach | Pyrus spinosa Forssk. | 30549 | 448614 |
| Pyrus ovoidea Rehder | Pyrus ussuriensis Maxim. | | | Pyrus ovoidea Rehder | Pyrus ussuriensis Maxim. | 30550 | 30607 |
| Pyrus pashia Buch.-Ham. ex D. Don | | a | | Pyrus pashia Buch.-Ham. ex D. Don | | 30551 | |
| Pyrus pashia Buch.-Ham. ex D. Don var. kumaoni (Decne.) Stapf | Pyrus pashia Buch.-Ham. ex D. Don | | i | Pyrus pashia Buch.-Ham. ex D. Don var.kumaoni (Decne.) Stapf | Pyrus pashia Buch.-Ham. ex D. Don | 30552 | 30551 |
| Pyrus pekinensis (Koehne) Cardot | Sorbus discolor (Maxim.) Maxim. | | | Pyrus pekinensis (Koehne) Cardot | Sorbus discolor (Maxim.) Maxim. | 30553 | 35017 |
| Pyrus persica Pers. | Pyrus spinosa Forssk. | | | Pyrus persica Pers. | Pyrus spinosa Forssk. | 30554 | 448614 |
| Pyrus ×phaeocarpa Rehder | | a | | Pyrus phaeocarpa Rehder | | 30555 | |
| Pyrus pinnatifida Ehrh. | Sorbus hybrida L. | | | Pyrus pinnatifida Ehrh. | Sorbus hybrida L. | 30557 | 35030 |
| Pyrus pohuashanensis Hance | Sorbus aucuparia L. subsp. pohuashanensis (Hance) McAll. | | | Pyrus pohuashanensis Hance | Sorbus aucuparia L. subsp. pohuashanensis (Hance) McAll. | 30558 | 460364 |
| Pyrus pollveria L. | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus pollveria L. | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30559 | 34991 |
| Pyrus pollvilla C. C. Gmel. | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus pollvilla C. C. Gmel. | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30564 | 34991 |
| Pyrus pollwilleriana J. Bauhin ex Decne. | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus pollwilleriana J. Bauhin ex Decne. | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30565 | 34991 |
| Pyrus prattii Hemsl. | Malus prattii (Hemsl.) C. K. Schneid. | | | Pyrus prattii Hemsl. | Malus prattii (Hemsl.) C. K. Schneid. | 30566 | 23258 |
| Pyrus prunifolia Willd. | Malus prunifolia (Willd.) Borkh. | | | Pyrus prunifolia Willd. | Malus prunifolia (Willd.) Borkh. | 30567 | 23259 |
| Pyrus pyrifolia (Burm. f.) Nakai | | a | | Pyrus pyrifolia (Burm. f.) Nakai | | 30569 | |
| Pyrus regelii Rehder | | a | | Pyrus regelii Rehder | | 30570 | |
| Pyrus ringo Wenz. | Malus ×asiatica Nakai | | | Pyrus ringo Wenz. | Malus asiatica Nakai | 30571 | 104653 |
| Pyrus ringo Wenz. var. kaido Wenz. | Malus ×micromalus Makino | | i | Pyrus ringo Wenz. var.kaido Wenz. | Malus micromalus Makino | 30572 | 23252 |
| Pyrus rivularis Douglas | Malus fusca (Raf.) C. K. Schneid. | | | Pyrus rivularis Douglas | Malus fusca (Raf.) C. K. Schneid. | 30573 | 23239 |
| Pyrus rotundifolia Bechst. | Sorbus latifolia (Lam.) Pers. | | | Pyrus rotundifolia Bechst. | Sorbus latifolia (Lam.) Pers. | 30574 | 35041 |
| Pyrus rufifolia H. Lév. | Docynia indica (Wall.) Decne. | | | Pyrus rufifolia H. Lév. | Docynia indica (Wall.) Decne. | 30575 | 14425 |
| Pyrus salicifolia Pall. | | a | | Pyrus salicifolia Pall. | | 30576 | |
| Pyrus salviifolia DC. | Pyrus ×nivalis Jacq. | | | Pyrus salviifolia DC. | Pyrus nivalis Jacq. | 30577 | 30545 |
| Pyrus sambucifolia Cham. & Schltdl. | Sorbus sambucifolia (Cham. & Schltdl.) M. Roem. | | | Pyrus sambucifolia Cham. & Schltdl. | Sorbus sambucifolia (Cham. & Schltdl.) M. Roem. | 30578 | 35060 |
| Pyrus sargentii (Rehder) Bean | Malus sargentii Rehder | | | Pyrus sargentii (Rehder) Bean | Malus sargentii Rehder | 30579 | 23269 |
| Pyrus scalaris (Koehne) Bean | Sorbus scalaris Koehne | | | Pyrus scalaris (Koehne) Bean | Sorbus scalaris Koehne | 30580 | 35063 |
| Pyrus ×scheideckeri (L. H. Bailey) hort. ex Wittm. | Malus ×scheideckeri (L. H. Bailey) Späth ex Zabel | | | Pyrus scheideckeri (L. H. Bailey) hort. ex Wittm. | Malus scheideckeri (L. H. Bailey) Späth ex Zabel | 30581 | 23270 |
| Pyrus serotina Rehder | Pyrus pyrifolia (Burm. f.) Nakai | | | Pyrus serotina Rehder | Pyrus pyrifolia (Burm. f.) Nakai | 30582 | 30569 |
| Pyrus serotina Rehder var. culta (Makino) Rehder | Pyrus pyrifolia (Burm. f.) Nakai var. culta (Makino) Nakai | | i | Pyrus serotina Rehder var.culta (Makino) Rehder | Pyrus pyrifolia (Burm. f.) Nakai var.culta (Makino) Nakai | 30584 | 104692 |
| Pyrus ×serrulata Rehder | Pyrus ×neoserrulata I. M. Turner | | | Pyrus serrulata Rehder | Pyrus neoserrulata I. M. Turner | 30586 | 476599 |
| Pyrus setschwanensis (C. K. Schneid.) Cardot | Sorbus microphylla Wenz. | | | Pyrus setschwanensis (C. K. Schneid.) Cardot | Sorbus microphylla Wenz. | 30587 | 35047 |
| Pyrus sieboldii Regel | Malus toringo (Siebold) de Vriese | | | Pyrus sieboldii Regel | Malus toringo (Siebold) de Vriese | 30588 | 23282 |
| Pyrus sikkimensis Hook. f. | Malus sikkimensis (Wenz.) Koehne ex C. K. Schneid. | | | Pyrus sikkimensis Hook. f. | Malus sikkimensis (Wenz.) Koehne ex C. K. Schneid. | 30589 | 23276 |
| Pyrus simonii Carrière | Pyrus ussuriensis Maxim. | | | Pyrus simonii Carrière | Pyrus ussuriensis Maxim. | 30590 | 30607 |
| Pyrus sinai Desf. | Pyrus spinosa Forssk. | | | Pyrus sinai Desf. | Pyrus spinosa Forssk. | 30591 | 448614 |
| Pyrus sinaica Dum. Cours. | Pyrus spinosa Forssk. | | | Pyrus sinaica Dum. Cours. | Pyrus spinosa Forssk. | 30592 | 448614 |
| Pyrus sinaica Thouin | Pyrus spinosa Forssk. | | | Pyrus sinaica Thouin | Pyrus spinosa Forssk. | 30593 | 448614 |
| Pyrus sinensis (Thouin) Spreng. var. maximowicziana H. Lév. | Pourthiaea villosa (Thunb.) Decne. | | i | Pyrus sinensis (Thouin) Spreng. var.maximowicziana H. Lév. | Pourthiaea villosa (Thunb.) Decne. | 30594 | 413276 |
| Pyrus sorbifolia Cham. ex Spreng. | Pyrus spp. | | | Pyrus sorbifolia Cham. ex Spreng. | Pyrus spp. | 30595 | 300499 |
| Pyrus sorbus Gaertn. | Sorbus domestica L. | | | Pyrus sorbus Gaertn. | Sorbus domestica L. | 30596 | 35018 |
| Pyrus ×soulardii L. H. Bailey | Malus ×soulardii (L. H. Bailey) Britton | | | Pyrus soulardii L. H. Bailey | Malus soulardii (L. H. Bailey) Britton | 30597 | 23277 |
| Pyrus spectabilis Aiton | Malus spectabilis (Aiton) Borkh. | | | Pyrus spectabilis Aiton | Malus spectabilis (Aiton) Borkh. | 30598 | 23278 |
| Pyrus spuria (Pers.) DC. | ×Sorbaronia hybrida (Moench) C. K. Schneid. | | | Pyrus spuria (Pers.) DC. | Sorbaronia hybrida (Moench) C. K. Schneid. | 30599 | 34987 |
| Pyrus syriaca Boiss. | | a | | Pyrus syriaca Boiss. | | 30600 | |
| Pyrus tomentosa Moench | ×Sorbopyrus auricularis (Knoop) C. K. Schneid. | | | Pyrus tomentosa Moench | Sorbopyrus auricularis (Knoop) C. K. Schneid. | 30601 | 34991 |
| Pyrus toringo (Siebold) Miq. | Malus toringo (Siebold) de Vriese | | | Pyrus toringo (Siebold) Miq. | Malus toringo (Siebold) de Vriese | 30602 | 23282 |
| Pyrus torminalis (L.) Ehrh. | Sorbus torminalis (L.) Crantz | | | Pyrus torminalis (L.) Ehrh. | Sorbus torminalis (L.) Crantz | 30603 | 35071 |
| Pyrus trilobata (Poir.) DC. | Malus trilobata (Poir.) C. K. Schneid. | | | Pyrus trilobata (Poir.) DC. | Malus trilobata (Poir.) C. K. Schneid. | 30604 | 23286 |
| Pyrus tschonoskii Maxim. | Malus tschonoskii (Maxim.) C. K. Schneid. | | | Pyrus tschonoskii Maxim. | Malus tschonoskii (Maxim.) C. K. Schneid. | 30605 | 23287 |
| Pyrus turkestanica Franch. | Sorbus turkestanica (Franch.) Hedl. | | | Pyrus turkestanica Franch. | Sorbus turkestanica (Franch.) Hedl. | 30606 | 35073 |
| Pyrus ussuriensis Maxim. | | a | | Pyrus ussuriensis Maxim. | | 30607 | |
| Pyrus ussuriensis Maxim. var. hondoensis (Nakai & Kikuchi) Rehder | Pyrus ×hondoensis Nakai & Kikuchi | | i | Pyrus ussuriensis Maxim. var.hondoensis (Nakai & Kikuchi) Rehder | Pyrus hondoensis Nakai & Kikuchi | 30608 | 30506 |
| Pyrus ussuriensis Maxim. var. ovoidea (Rehder) Rehder | Pyrus ussuriensis Maxim. | | i | Pyrus ussuriensis Maxim. var.ovoidea (Rehder) Rehder | Pyrus ussuriensis Maxim. | 30609 | 30607 |
| Pyrus ×uyematsuana Makino | | a | | Pyrus uyematsuana Makino | | 30610 | |
| Pyrus variolosa Wall. ex G. Don | Pyrus pashia Buch.-Ham. ex D. Don | | | Pyrus variolosa Wall. ex G. Don | Pyrus pashia Buch.-Ham. ex D. Don | 30611 | 30551 |
| Pyrus verruculosa Bertol. | Pyrus pashia Buch.-Ham. ex D. Don | | | Pyrus verruculosa Bertol. | Pyrus pashia Buch.-Ham. ex D. Don | 30612 | 30551 |
| Pyrus vestita Wall. ex G. Don | Sorbus vestita (Wall. ex G. Don) Lodd. | | | Pyrus vestita Wall. ex G. Don | Sorbus vestita (Wall. ex G. Don) Lodd. | 30613 | 313813 |
| Pyrus vilmorinii (C. K. Schneid.) Asch. & Graebn. | Sorbus vilmorinii C. K. Schneid. | | | Pyrus vilmorinii (C. K. Schneid.) Asch. & Graebn. | Sorbus vilmorinii C. K. Schneid. | 30614 | 35076 |
| Pyrus wilhelmii C. K. Schneid. | Pyrus pashia Buch.-Ham. ex D. Don | | | Pyrus wilhelmii C. K. Schneid. | Pyrus pashia Buch.-Ham. ex D. Don | 30615 | 30551 |
| Pyrus yunnanensis Franch. | Malus yunnanensis (Franch.) C. K. Schneid. var. yunnanensis | | | Pyrus yunnanensis Franch. | Malus yunnanensis (Franch.) C. K. Schneid. var.yunnanensis | 30616 | 409178 |
| Pyrus zahlbruckneri (C. K. Schneid.) Cardot | Sorbus zahlbruckneri C. K. Schneid. | | | Pyrus zahlbruckneri (C. K. Schneid.) Cardot | Sorbus zahlbruckneri C. K. Schneid. | 30617 | 35079 |
| Pyrus zumi Matsum. | Malus zumi (Matsum.) Rehder | | | Pyrus zumi Matsum. | Malus zumi (Matsum.) Rehder | 30618 | 23290 |
| Pyrus amygdaliformis Vill. | Pyrus spinosa Forssk. | | | Pyrus amygdaliformis Vill. | Pyrus spinosa Forssk. | 70533 | 448614 |
| Pyrus hupehensis Pamp. | Malus hupehensis (Pamp.) Rehder | | | Pyrus hupehensis Pamp. | Malus hupehensis (Pamp.) Rehder | 70534 | 23244 |
| Pyrus glabra Boiss. | | a | | Pyrus glabra Boiss. | | 104557 | |
| Pyrus pseudopashia T. T. Yu | | a | | Pyrus pseudopashia T. T. Yu | | 104685 | |
| Pyrus ×xerophila T. T. Yu | | a | | Pyrus xerophila T. T. Yu | | 104686 | |
| Pyrus spinosa Forssk. var. oblongifolia (Spach) Dostalek | Pyrus spinosa Forssk. | | i | Pyrus spinosa Forssk. var.oblongifolia (Spach) Dostalek | Pyrus spinosa Forssk. | 104687 | 448614 |
| Pyrus dimorphophylla Makino | | a | | Pyrus dimorphophylla Makino | | 104688 | |
| Pyrus ×calleryana Decne. var. koehnei (C. K. Schneid.) T. T. Yu | Pyrus koehnei C. K. Schneid. | | i | Pyrus calleryana Decne. var.koehnei (C. K. Schneid.) T. T. Yu | Pyrus koehnei C. K. Schneid. | 104689 | 30518 |
| Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | | a | i | Pyrus elaeagrifolia Pall. subsp. kotschyana (Boiss. ex Decne.) Browicz | | 104690 | |
| Pyrus pyrifolia (Burm. f.) Nakai var. culta (Makino) Nakai | | a | i | Pyrus pyrifolia (Burm. f.) Nakai var.culta (Makino) Nakai | | 104692 | |
| Pyrus pyrifolia (Burm. f.) Nakai f. stapfiana (Rehder) Rehder | Pyrus pyrifolia (Burm. f.) Nakai | | i | Pyrus pyrifolia (Burm. f.) Nakai f. stapfiana (Rehder) Rehder | Pyrus pyrifolia (Burm. f.) Nakai | 104693 | 30569 |
| Pyrus hybr. | | a | | Pyrus hybr. | | 300498 | |
| Pyrus spp. | | a | | Pyrus spp. | | 300499 | |
| Pyrus serotina Rehder var. stapfiana Rehder | Pyrus pyrifolia (Burm. f.) Nakai | | i | Pyrus serotina Rehder var.stapfiana Rehder | Pyrus pyrifolia (Burm. f.) Nakai | 310274 | 30569 |
| Pyrus sudetica Tausch | Sorbus sudetica (Tausch) Fritsch | | | Pyrus sudetica Tausch | Sorbus sudetica (Tausch) Fritsch | 312169 | 312167 |
| Pyrus asiae-mediae (Popov) Maleev | Pyrus communis L. | | | Pyrus asiae-mediae (Popov) Maleev | Pyrus communis L. | 313570 | 30474 |
| Pyrus balansae Decne. | Pyrus communis L. | | | Pyrus balansae Decne. | Pyrus communis L. | 313571 | 30474 |
| Pyrus pyraster (L.) Burgsd. | Pyrus communis L. subsp. pyraster (L.) Ehrh. | | | Pyrus pyraster (L.) Burgsd. | Pyrus communis L. subsp. pyraster (L.) Ehrh. | 313572 | 448613 |
| Pyrus communis L. subsp. caucasica (Fed.) Browicz | | a | i | Pyrus communis L. subsp. caucasica (Fed.) Browicz | | 313573 | |
| Pyrus caucasica Fed. | Pyrus communis L. subsp. caucasica (Fed.) Browicz | | | Pyrus caucasica Fed. | Pyrus communis L. subsp. caucasica (Fed.) Browicz | 313574 | 313573 |
| Pyrus elata Rubtzov | Pyrus communis L. | | | Pyrus elata Rubtzov | Pyrus communis L. | 313575 | 30474 |
| Pyrus medvedevii Rubtzov | Pyrus communis L. | | | Pyrus medvedevii Rubtzov | Pyrus communis L. | 313576 | 30474 |
| Pyrus kawakamii Hayata | Pyrus ×calleryana Decne. | | | Pyrus kawakamii Hayata | Pyrus calleryana Decne. | 313577 | 30463 |
| Pyrus lindleyi Rehder | Pyrus ussuriensis Maxim. | | | Pyrus lindleyi Rehder | Pyrus ussuriensis Maxim. | 313578 | 30607 |
| Pyrus ×phaeocarpa Rehder f. globosa Rehder | Pyrus ×phaeocarpa Rehder | | i | Pyrus phaeocarpa Rehder f. globosa Rehder | Pyrus phaeocarpa Rehder | 313580 | 30555 |
| Pyrus korshinskyi Litv. subsp. bucharica (Litv.) Bondarenko ex Korovina | | a | i | Pyrus korshinskyi Litv. subsp. bucharica (Litv.) Bondarenko ex Korovina | | 313581 | |
| Pyrus bucharica Litv. | Pyrus korshinskyi Litv. subsp. bucharica (Litv.) Bondarenko ex Korovina | | | Pyrus bucharica Litv. | Pyrus korshinskyi Litv. subsp. bucharica (Litv.) Bondarenko ex Korovina | 313582 | 313581 |
| Pyrus aucuparia (L.) Gaertn. var. randaiensis Hayata | Sorbus randaiensis (Hayata) Koidz. | | i | Pyrus aucuparia (L.) Gaertn. var.randaiensis Hayata | Sorbus randaiensis (Hayata) Koidz. | 313663 | 105569 |
| Pyrus sanguinea Pursh | Amelanchier sanguinea (Pursh) DC. | | | Pyrus sanguinea Pursh | Amelanchier sanguinea (Pursh) DC. | 313667 | 2879 |
| Pyrus nebrodensis Guss. | Cotoneaster nebrodensis (Guss.) K. Koch | | | Pyrus nebrodensis Guss. | Cotoneaster nebrodensis (Guss.) K. Koch | 313689 | 313688 |
| Pyrus scabrifolia Franch. | Crataegus scabrifolia (Franch.) Rehder | | | Pyrus scabrifolia Franch. | Crataegus scabrifolia (Franch.) Rehder | 313705 | 104575 |
| Pyrus cuneifolia Guss. | Pyrus spinosa Forssk. | | | Pyrus cuneifolia Guss. | Pyrus spinosa Forssk. | 314520 | 448614 |
| Pyrus amygdaliformis Vill. var. cuneifolia (Guss.) Bean | Pyrus spinosa Forssk. | | i | Pyrus amygdaliformis Vill. var.cuneifolia (Guss.) Bean | Pyrus spinosa Forssk. | 314521 | 448614 |
| Pyrus ×nivalis Jacq. var. orientalis Terpó | Pyrus ×nivalis Jacq. | | i | Pyrus nivalis Jacq. var.orientalis Terpó | Pyrus nivalis Jacq. | 314522 | 30545 |
| Pyrus bourgaeana Decne. | Pyrus communis L. | | | Pyrus bourgaeana Decne. | Pyrus communis L. | 316049 | 30474 |
| Pyrus domestica (L.) Sm. | Sorbus domestica L. | | | Pyrus domestica (L.) Sm. | Sorbus domestica L. | 319772 | 35018 |
| Pyrus domestica Medik. | Pyrus communis L. | | | Pyrus domestica Medik. | Pyrus communis L. | 319773 | 30474 |
| Pyrus pyrifolia (Burm. f.) Nakai var. pyrifolia | | a | i | Pyrus pyrifolia (Burm. f.) Nakai var.pyrifolia | | 400531 | |
| Pyrus baccata L. var. aurantiaca Regel | Malus baccata (L.) Borkh. var. baccata | | i | Pyrus baccata L. var.aurantiaca Regel | Malus baccata (L.) Borkh. var.baccata | 400728 | 320217 |
| Pyrus baccata L. var. cerasifera Regel | Malus ×robusta (Carrière) Rehder | | i | Pyrus baccata L. var.cerasifera Regel | Malus robusta (Carrière) Rehder | 400729 | 23268 |
| Pyrus floribunda G. Kirchn. | Malus floribunda Siebold ex Van Houtte | | | Pyrus floribunda G. Kirchn. | Malus floribunda Siebold ex Van Houtte | 400926 | 23233 |
| Pyrus doumeri Bois | Malus doumeri (Bois) A. Chev. | | | Pyrus doumeri Bois | Malus doumeri (Bois) A. Chev. | 403372 | 23231 |
| Pyrus taiwanensis Iketani & H. Ohashi | | a | | Pyrus taiwanensis Iketani & H. Ohashi | | 403708 | |
| Pyrus praecox Pall. | Malus pumila Mill. | | | Pyrus praecox Pall. | Malus pumila Mill. | 409176 | 23261 |
| Pyrus floribunda Lindl. | Aronia ×prunifolia (Marshall) Rehder | | | Pyrus floribunda Lindl. | Aronia prunifolia (Marshall) Rehder | 409396 | 104451 |
| Pyrus melliana Hand.-Mazz. | Malus doumeri (Bois) A. Chev. | | | Pyrus melliana Hand.-Mazz. | Malus doumeri (Bois) A. Chev. | 415971 | 23231 |
| Pyrus aria (L.) Ehrh. subsp. rupicola Syme | Sorbus aria (L.) Crantz | | i | Pyrus aria (L.) Ehrh. subsp. rupicola Syme | Sorbus aria (L.) Crantz | 447791 | 34996 |
| Pyrus communis L. subsp. gharbiana (Trab.) Maire | Pyrus gharbiana Trab. | | i | Pyrus communis L. subsp. gharbiana (Trab.) Maire | Pyrus gharbiana Trab. | 448610 | 30500 |
| Pyrus communis L. subsp. marmorensis (Trab.) Maire | Pyrus mamorensis Trab. | | i | Pyrus communis L. subsp. marmorensis (Trab.) Maire | Pyrus mamorensis Trab. | 448611 | 30532 |
| Pyrus communis L. subsp. bourgaeana (Decne.) Nyman | Pyrus communis L. | | i | Pyrus communis L. subsp. bourgaeana (Decne.) Nyman | Pyrus communis L. | 448612 | 30474 |
| Pyrus communis L. subsp. pyraster (L.) Ehrh. | | a | i | Pyrus communis L. subsp. pyraster (L.) Ehrh. | | 448613 | |
| Pyrus spinosa Forssk. | | a | | Pyrus spinosa Forssk. | | 448614 | |
| Pyrus communis L. var. mariana Willk. | Pyrus communis L. | | i | Pyrus communis L. var.mariana Willk. | Pyrus communis L. | 448615 | 30474 |
| Pyrus elaeagrifolia Pall. subsp. elaeagrifolia | | a | i | Pyrus elaeagrifolia Pall. subsp. elaeagrifolia | | 448616 | |
| Pyrus turcomanica Maleev | | a | | Pyrus turcomanica Maleev | | 448617 | |
| Pyrus floribunda G. Kirchn. var. atrosanguinea hort. ex Späth | Malus ×atrosanguinea (hort. ex Späth) C. K. Schneid. | | i | Pyrus floribunda G. Kirchn. var.atrosanguinea hort. ex Späth | Malus atrosanguinea (hort. ex Späth) C. K. Schneid. | 448858 | 23218 |
| Pyrus communis L. subsp. communis | | a | i | Pyrus communis L. subsp. communis | | 449936 | |
| Pyrus bhutanica W. W. Sm. | Malus toringoides (Rehder) Hughes | | | Pyrus bhutanica W. W. Sm. | Malus toringoides (Rehder) Hughes | 450249 | 23283 |
| Pyrus sachokiana Kuth. | | a | | Pyrus sachokiana Kuth. | | 451637 | |
| Pyrus ×hopeiensis T. T. Yu | | a | | Pyrus hopeiensis T. T. Yu | | 451686 | |
| Pyrus ×sinkiangensis T. T. Yu | | a | | Pyrus sinkiangensis T. T. Yu | | 451687 | |
| Pyrus armeniacifolia T. T. Yu | | a | | Pyrus armeniacifolia T. T. Yu | | 451688 | |
| Pyrus praemorsa Guss. | Sorbus aucuparia L. subsp. praemorsa (Guss.) Nyman | | | Pyrus praemorsa Guss. | Sorbus aucuparia L. subsp. praemorsa (Guss.) Nyman | 460367 | 460362 |
| Pyrus salicifolia Pall. f. pendula (H. Jaeger) Geerinck | Pyrus salicifolia Pall. | | i | Pyrus salicifolia Pall. f. pendula (H. Jaeger) Geerinck | Pyrus salicifolia Pall. | 462727 | 30576 |
| Pyrus salicifolia Pall. var. pendula H. Jaeger | Pyrus salicifolia Pall. | | i | Pyrus salicifolia Pall. var.pendula H. Jaeger | Pyrus salicifolia Pall. | 462728 | 30576 |
| Pyrus elaeagrifolia Pall. subsp. bulgarica (Kuth. & Sachokia) Valev | Pyrus ×nivalis Jacq. | | i | Pyrus elaeagrifolia Pall. subsp. bulgarica (Kuth. & Sachokia) Valev | Pyrus nivalis Jacq. | 463472 | 30545 |
| Pyrus bulgarica Kuth. & Sachokia | Pyrus ×nivalis Jacq. | | | Pyrus bulgarica Kuth. & Sachokia | Pyrus nivalis Jacq. | 463473 | 30545 |
| Pyrus malus L. subsp. paradisiaca (L.) Schübl. & G. Martens | Malus pumila Mill. | | i | Pyrus malus L. subsp. paradisiaca (L.) Schübl. & G. Martens | Malus pumila Mill. | 464072 | 23261 |
| Pyrus canadensis (L.) Farw. | Amelanchier canadensis (L.) Medik. | | | Pyrus canadensis (L.) Farw. | Amelanchier canadensis (L.) Medik. | 466173 | 2873 |
| Pyrus carolinensis (Ashe) Ashe | Malus coronaria (L.) Mill. | | | Pyrus carolinensis (Ashe) Ashe | Malus coronaria (L.) Mill. | 466175 | 23225 |
| Pyrus decora (Sarg.) Hyl. | Sorbus decora (Sarg.) C. K. Schneid. | | | Pyrus decora (Sarg.) Hyl. | Sorbus decora (Sarg.) C. K. Schneid. | 466176 | 35015 |
| Pyrus dumosa (Greene) Fernald | Sorbus dumosa Greene | | | Pyrus dumosa (Greene) Fernald | Sorbus dumosa Greene | 466177 | 315997 |
| Pyrus elongata (Ashe) Ashe | Malus coronaria (L.) Mill. | | | Pyrus elongata (Ashe) Ashe | Malus coronaria (L.) Mill. | 466179 | 23225 |
| Pyrus ×fallax (C. K. Schneid.) Asch. & Graebn. | ×Sorbaronia fallax (C. K. Schneid.) C. K. Schneid. | | | Pyrus fallax (C. K. Schneid.) Asch. & Graebn. | Sorbaronia fallax (C. K. Schneid.) C. K. Schneid. | 466181 | 34986 |
| Pyrus americana DC. var. decora Sarg. | Sorbus decora (Sarg.) C. K. Schneid. | | i | Pyrus americana DC. var.decora Sarg. | Sorbus decora (Sarg.) C. K. Schneid. | 466182 | 35015 |
| Pyrus groenlandica (C. K. Schneid.) K. R. Robertson | Sorbus decora (Sarg.) C. K. Schneid. | | | Pyrus groenlandica (C. K. Schneid.) K. R. Robertson | Sorbus decora (Sarg.) C. K. Schneid. | 466184 | 35015 |
| Pyrus hybrida (L.) Sm. | Sorbus hybrida L. | | | Pyrus hybrida (L.) Sm. | Sorbus hybrida L. | 466185 | 35030 |
| Pyrus ×jackii (Rehder) Fernald | ×Sorbaronia jackii Rehder | | | Pyrus jackii (Rehder) Fernald | Sorbaronia jackii Rehder | 466186 | 466187 |
| Pyrus ×micromalus (Makino) L. H. Bailey | Malus ×micromalus Makino | | | Pyrus micromalus (Makino) L. H. Bailey | Malus micromalus Makino | 466188 | 23252 |
| Pyrus redolens (Ashe) Ashe | Malus ×platycarpa Rehder | | | Pyrus redolens (Ashe) Ashe | Malus platycarpa Rehder | 466190 | 23257 |
| Pyrus suecica Garcke | Sorbus intermedia (Ehrh.) Pers. | | | Pyrus suecica Garcke | Sorbus intermedia (Ehrh.) Pers. | 466191 | 35033 |
| Pyrus theifera (Rehder) L. H. Bailey | Malus hupehensis (Pamp.) Rehder | | | Pyrus theifera (Rehder) L. H. Bailey | Malus hupehensis (Pamp.) Rehder | 466192 | 23244 |
| Pyrus trilocularis D. K. Zang & P. C. Huang | | a | | Pyrus trilocularis D. K. Zang & P. C. Huang | | 466193 | |
| Pyrus floribunda Lindl. var. scheideckeri L. H. Bailey | Malus ×scheideckeri (L. H. Bailey) Späth ex Zabel | | i | Pyrus floribunda Lindl. var.scheideckeri L. H. Bailey | Malus scheideckeri (L. H. Bailey) Späth ex Zabel | 467614 | 23270 |
| Pyrus ×nivalis Jacq. subsp. salviifolia (DC.) Schinz & Thell. | Pyrus ×nivalis Jacq. | | i | Pyrus nivalis Jacq. subsp. salviifolia (DC.) Schinz & Thell. | Pyrus nivalis Jacq. | 467761 | 30545 |
| Pyrus ×nivalis Jacq. var. salviifolia (DC.) Rouy & A. Camus | Pyrus ×nivalis Jacq. | | i | Pyrus nivalis Jacq. var.salviifolia (DC.) Rouy & A. Camus | Pyrus nivalis Jacq. | 467762 | 30545 |
| Pyrus ×neoserrulata I. M. Turner | | a | | Pyrus neoserrulata I. M. Turner | | 476599 | |
| Pyrus bartramiana Tausch | Amelanchier bartramiana (Tausch) M. Roem. | | | Pyrus bartramiana Tausch | Amelanchier bartramiana (Tausch) M. Roem. | 481315 | 104431 |
| Pyrus cretica Willd. | Amelanchier ovalis Medik. var. cretica (Willd.) Fiori | | | Pyrus cretica Willd. | Amelanchier ovalis Medik. var.cretica (Willd.) Fiori | 481318 | 104430 |
| Pyrus transitoria Batalin | Malus transitoria (Batalin) C. K. Schneid. | | | Pyrus transitoria Batalin | Malus transitoria (Batalin) C. K. Schneid. | 482135 | 23284 |
| Pyrus ×calleryana Decne. f. calleryana | Pyrus ×calleryana Decne. | | i | Pyrus calleryana Decne. f. calleryana | Pyrus calleryana Decne. | 484174 | 30463 |
| Pyrus ×calleryana Decne. var. calleryana | Pyrus ×calleryana Decne. | | i | Pyrus calleryana Decne. var.calleryana | Pyrus calleryana Decne. | 484175 | 30463 |
| Pyrus baccata L. var. baccata | Malus baccata (L.) Borkh. var. baccata | | i | Pyrus baccata L. var.baccata | Malus baccata (L.) Borkh. var.baccata | 484176 | 320217 |
| Pyrus aria (L.) Ehrh. var. aria | Sorbus aria (L.) Crantz | | i | Pyrus aria (L.) Ehrh. var.aria | Sorbus aria (L.) Crantz | 484177 | 34996 |
| Pyrus aria (L.) Ehrh. subsp. aria | Sorbus aria (L.) Crantz | | i | Pyrus aria (L.) Ehrh. subsp. aria | Sorbus aria (L.) Crantz | 484178 | 34996 |
| Pyrus arbutifolia (L.) L. f. var. arbutifolia | Aronia arbutifolia (L.) Pers. | | i | Pyrus arbutifolia (L.) L. f. var.arbutifolia | Aronia arbutifolia (L.) Pers. | 484179 | 4245 |
| Pyrus aucuparia (L.) Gaertn. var. aucuparia | Sorbus aucuparia L. subsp. aucuparia | | i | Pyrus aucuparia (L.) Gaertn. var.aucuparia | Sorbus aucuparia L. subsp. aucuparia | 484180 | 460360 |
| Pyrus ×phaeocarpa Rehder f. phaeocarpa | Pyrus ×phaeocarpa Rehder | | i | Pyrus phaeocarpa Rehder f. phaeocarpa | Pyrus phaeocarpa Rehder | 484181 | 30555 |
| Pyrus pashia Buch.-Ham. ex D. Don var. pashia | Pyrus pashia Buch.-Ham. ex D. Don | | i | Pyrus pashia Buch.-Ham. ex D. Don var.pashia | Pyrus pashia Buch.-Ham. ex D. Don | 484182 | 30551 |
| Pyrus pyrifolia (Burm. f.) Nakai f. pyrifolia | Pyrus pyrifolia (Burm. f.) Nakai | | i | Pyrus pyrifolia (Burm. f.) Nakai f. pyrifolia | Pyrus pyrifolia (Burm. f.) Nakai | 484183 | 30569 |
| Pyrus ringo Wenz. var. ringo | Malus ×asiatica Nakai | | i | Pyrus ringo Wenz. var.ringo | Malus asiatica Nakai | 484184 | 104653 |
| Pyrus salicifolia Pall. f. salicifolia | Pyrus salicifolia Pall. | | i | Pyrus salicifolia Pall. f. salicifolia | Pyrus salicifolia Pall. | 484185 | 30576 |
| Pyrus salicifolia Pall. var. salicifolia | Pyrus salicifolia Pall. | | i | Pyrus salicifolia Pall. var.salicifolia | Pyrus salicifolia Pall. | 484186 | 30576 |
| Pyrus aria (L.) Ehrh.) var. obtusifolia DC. | Sorbus obtusifolia (DC.) Hedl. | | i | Pyrus aria (L.) Ehrh.) var.obtusifolia DC. | Sorbus obtusifolia (DC.) Hedl. | 485258 | 485259 |
| Pyrus ×triploida Ranney | | a | | Pyrus triploida Ranney | | 485826 | |
| Pyrus americana DC. var. americana | Sorbus decora (Sarg.) C. K. Schneid. | | i | Pyrus americana DC. var.americana | Sorbus decora (Sarg.) C. K. Schneid. | 486210 | 35015 |
| Pyrus amygdaliformis Vill. var. amygdaliformis | Pyrus spinosa Forssk. | | i | Pyrus amygdaliformis Vill. var.amygdaliformis | Pyrus spinosa Forssk. | 486211 | 448614 |
| Pyrus communis L. var. communis | Pyrus communis L. subsp. communis | | i | Pyrus communis L. var.communis | Pyrus communis L. subsp. communis | 486212 | 449936 |
| Pyrus coronaria L. var. coronaria | Malus coronaria (L.) Mill. | | i | Pyrus coronaria L. var.coronaria | Malus coronaria (L.) Mill. | 486213 | 23225 |
| Pyrus elaeagrifolia Pall. var. elaeagrifolia | Pyrus elaeagrifolia Pall. subsp. elaeagrifolia | | i | Pyrus elaeagrifolia Pall. var.elaeagrifolia | Pyrus elaeagrifolia Pall. subsp. elaeagrifolia | 486214 | 448616 |
| Pyrus floribunda Lindl. var. floribunda Lindl. | Aronia ×prunifolia (Marshall) Rehder | | i | Pyrus floribunda Lindl. var.floribunda Lindl. | Aronia prunifolia (Marshall) Rehder | 486215 | 104451 |
| Pyrus floribunda G. Kirchn. var. floribunda G. Kirchn. | Malus floribunda Siebold ex Van Houtte | | i | Pyrus floribunda G. Kirchn. var.floribunda G. Kirchn. | Malus floribunda Siebold ex Van Houtte | 486217 | 23233 |
| Pyrus ioensis (Alph. Wood) J. H. Carruth | Malus ioensis (Alph. Wood) Britton | | | Pyrus ioensis (Alph. Wood) J. H. Carruth | Malus ioensis (Alph. Wood) Britton | 486218 | 23246 |
| Pyrus ioensis (Alph. Wood) J. H. Carruth var. ioensis | Malus ioensis (Alph. Wood) Britton | | i | Pyrus ioensis (Alph. Wood) J. H. Carruth var.ioensis | Malus ioensis (Alph. Wood) Britton | 486219 | 23246 |
| Pyrus korshinskyi Litv. subsp. korshinskyi | | a | i | Pyrus korshinskyi Litv. subsp. korshinskyi | | 486220 | |
| Pyrus malus L. var. malus | Malus domestica (Suckow) Borkh. | | i | Pyrus malus L. var.malus | Malus domestica (Suckow) Borkh. | 486221 | 104681 |
| Pyrus malus L. subsp. malus | Malus domestica (Suckow) Borkh. | | i | Pyrus malus L. subsp. malus | Malus domestica (Suckow) Borkh. | 486222 | 104681 |
| Pyrus ×nivalis Jacq. var. nivalis | Pyrus ×nivalis Jacq. | | i | Pyrus nivalis Jacq. var.nivalis | Pyrus nivalis Jacq. | 486223 | 30545 |
| Pyrus ×nivalis Jacq. subsp. nivalis | Pyrus ×nivalis Jacq. | | i | Pyrus nivalis Jacq. subsp. nivalis | Pyrus nivalis Jacq. | 486224 | 30545 |
| Pyrus serotina Rehder var. serotina | Pyrus pyrifolia (Burm. f.) Nakai | | i | Pyrus serotina Rehder var.serotina | Pyrus pyrifolia (Burm. f.) Nakai | 486225 | 30569 |
| Pyrus sinensis (Thouin) Spreng. var. sinensis | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | i | Pyrus sinensis (Thouin) Spreng. var.sinensis | Pseudocydonia sinensis (Thouin) C. K. Schneid. | 486226 | 318589 |
| Pyrus spinosa Forssk. var. spinosa | Pyrus spinosa Forssk. | | i | Pyrus spinosa Forssk. var.spinosa | Pyrus spinosa Forssk. | 486227 | 448614 |
| Pyrus ussuriensis Maxim. var. ussuriensis | Pyrus ussuriensis Maxim. | | i | Pyrus ussuriensis Maxim. var.ussuriensis | Pyrus ussuriensis Maxim. | 486228 | 30607 |