| Agave acklinicola Trel. | | a | | Agave acklinicola Trel. | | 1687 | |
| Agave affinis Trel. | Agave sobria Brandegee | | | Agave affinis Trel. | Agave sobria Brandegee | 1688 | 1736 |
| Agave albicans Jacobi | Agave celsii Hook. var. albicans (Jacobi) Gentry | | | Agave albicans Jacobi | Agave celsii Hook. var.albicans (Jacobi) Gentry | 1689 | 100800 |
| Agave americana L. | | a | | Agave americana L. | | 1690 | |
| Agave angustiarum Trel. ex Standl. | | a | | Agave angustiarum Trel. ex Standl. | | 1691 | |
| Agave angustifolia Haw. | | a | | Agave angustifolia Haw. | | 1692 | |
| Agave nelsonii Trel. | Agave cerulata Trel. subsp. nelsonii (Trel.) Gentry | | | Agave nelsonii Trel. | Agave cerulata Trel. subsp. nelsonii (Trel.) Gentry | 1701 | 100801 |
| Agave neomexicana Wooton & Standl. | Agave parryi Engelm. subsp. neomexicana (Wooton & Standl.) Ullrich | | | Agave neomexicana Wooton & Standl. | Agave parryi Engelm. subsp. neomexicana (Wooton & Standl.) Ullrich | 1702 | 430650 |
| Agave nivea Trel. | Agave angustifolia Haw. var. nivea (Trel.) Gentry | | | Agave nivea Trel. | Agave angustifolia Haw. var.nivea (Trel.) Gentry | 1703 | 100793 |
| Agave oblongata Jacobi | | a | | Agave oblongata Jacobi | | 1704 | |
| Agave obscura Schiede | | a | | Agave obscura Schiede | | 1705 | |
| Agave orcuttiana Trel. | Agave shawii Engelm. subsp. shawii | | | Agave orcuttiana Trel. | Agave shawii Engelm. subsp. shawii | 1706 | 430647 |
| Agave ousselghemiana Jacobi | | a | | Agave ousselghemiana Jacobi | | 1707 | |
| Agave palmeri Engelm. | | a | | Agave palmeri Engelm. | | 1708 | |
| Agave parrasana A. Berger | | a | | Agave parrasana A. Berger | | 1710 | |
| Agave parryi Engelm. | | a | | Agave parryi Engelm. | | 1711 | |
| Agave parryi Engelm. subsp. parryi var. couesii (Engelm. ex Trel.) Kearney & Peebles | | a | i | Agave parryi Engelm. subsp. parryi var.couesii (Engelm. ex Trel.) Kearney & Peebles | | 1712 | |
| Agave parviflora Torr. | | a | | Agave parviflora Torr. | | 1713 | |
| Agave patonii Trel. | Agave parryi Engelm. subsp. parryi var. parryi | | | Agave patonii Trel. | Agave parryi Engelm. subsp. parryi var.parryi | 1714 | 401842 |
| Agave pedunculifera Trel. ex Standl. | | a | | Agave pedunculifera Trel. ex Standl. | | 1715 | |
| Agave picta Salm-Dyck | Agave americana L. subsp. americana var. picta (Salm-Dyck) A. Terracc. | | | Agave picta Salm-Dyck | Agave americana L. subsp. americana var.picta (Salm-Dyck) A. Terracc. | 1716 | 100788 |
| Agave polyacantha Haw. | | a | | Agave polyacantha Haw. | | 1717 | |
| Agave potatorum Zucc. | | a | | Agave potatorum Zucc. | | 1718 | |
| Agave potosina B. L. Rob. & Greenm. | Manfreda potosina (B. L. Rob. & Greenm.) Rose | | | Agave potosina B. L. Rob. & Greenm. | Manfreda potosina (B. L. Rob. & Greenm.) Rose | 1719 | 101027 |
| Agave pringlei Engelm. ex Baker | Agave deserti Engelm. subsp. pringlei (Engelm. ex Baker) Gentry | | | Agave pringlei Engelm. ex Baker | Agave deserti Engelm. subsp. pringlei (Engelm. ex Baker) Gentry | 1720 | 100812 |
| Agave promontorii Trel. | | a | | Agave promontorii Trel. | | 1721 | |
| Agave rasconensis Trel. ex Standl. | Agave americana L. | | | Agave rasconensis Trel. ex Standl. | Agave americana L. | 1722 | 1690 |
| Agave roezliana Baker | Agave ghiesbreghtii K. Koch | | | Agave roezliana Baker | Agave ghiesbreghtii K. Koch | 1723 | 5440 |
| Agave roezliana Baker var. gilbeyi Trel. | Agave ghiesbreghtii K. Koch | | i | Agave roezliana Baker var.gilbeyi Trel. | Agave ghiesbreghtii K. Koch | 1724 | 5440 |
| Agave roseana Trel. | Agave sobria Brandegee subsp. roseana (Trel.) Gentry | | | Agave roseana Trel. | Agave sobria Brandegee subsp. roseana (Trel.) Gentry | 1725 | 100844 |
| Agave rupicola Regel | Agave celsii Hook. | | | Agave rupicola Regel | Agave celsii Hook. | 1726 | 100799 |
| Agave salmiana Otto ex Salm-Dyck | | a | | Agave salmiana Otto ex Salm-Dyck | | 1727 | |
| Agave sartorii K. Koch | Agave pendula Schnittsp. | | | Agave sartorii K. Koch | Agave pendula Schnittsp. | 1728 | 100837 |
| Agave schidigera Lem. | | a | | Agave schidigera Lem. | | 1729 | |
| Agave schottii Engelm. | | a | | Agave schottii Engelm. | | 1730 | |
| Agave sebastiana Greene | | a | | Agave sebastiana Greene | | 1731 | |
| Agave seemanniana Jacobi | | a | | Agave seemanniana Jacobi | | 1732 | |
| Agave shawii Engelm. | | a | | Agave shawii Engelm. | | 1733 | |
| Agave shrevei Gentry | | a | | Agave shrevei Gentry | | 1734 | |
| Agave sisalana Perrine | | a | | Agave sisalana Perrine | | 1735 | |
| Agave sobria Brandegee | | a | | Agave sobria Brandegee | | 1736 | |
| Agave striata Zucc. | | a | | Agave striata Zucc. | | 1737 | |
| Agave tequilana F. A. C. Weber | | a | | Agave tequilana F. A. C. Weber | | 1738 | |
| Agave terraccianoi Pax | | a | | Agave terraccianoi Pax | | 1739 | |
| Agave tortispina Trel. | Agave seemanniana Jacobi | | | Agave tortispina Trel. | Agave seemanniana Jacobi | 1740 | 1732 |
| Agave toumeyana Trel. ex Standl. | | a | | Agave toumeyana Trel. ex Standl. | | 1741 | |
| Agave tuberosa Mill. | Furcraea tuberosa (Mill.) W. T. Aiton | | | Agave tuberosa Mill. | Furcraea tuberosa (Mill.) W. T. Aiton | 1742 | 70925 |
| Agave univittata Haw. | Agave lophantha Schiede | | | Agave univittata Haw. | Agave lophantha Schiede | 1743 | 5457 |
| Agave utahensis Engelm. | | a | | Agave utahensis Engelm. | | 1744 | |
| Agave utahensis Engelm. var. nevadensis Engelm. ex Greenm. & Roush | | a | i | Agave utahensis Engelm. var.nevadensis Engelm. ex Greenm. & Roush | | 1745 | |
| Agave variegata Jacobi | Manfreda variegata (Jacobi) Rose | | | Agave variegata Jacobi | Manfreda variegata (Jacobi) Rose | 1746 | 23345 |
| Agave verschaffeltii Lem. ex Jacobi | Agave potatorum Zucc. | | | Agave verschaffeltii Lem. ex Jacobi | Agave potatorum Zucc. | 1747 | 1718 |
| Agave vestita S. Watson | Agave schidigera Lem. | | | Agave vestita S. Watson | Agave schidigera Lem. | 1748 | 1729 |
| Agave vexans Trel. | Agave datylio F. A. C. Weber var. vexans (Trel.) I. M. Johnst. | | | Agave vexans Trel. | Agave datylio F. A. C. Weber var.vexans (Trel.) I. M. Johnst. | 1749 | 100808 |
| Agave victoriae-reginae T. Moore | | a | | Agave victoriae-reginae T. Moore | | 1750 | |
| Agave vilmoriniana A. Berger | | a | | Agave vilmoriniana A. Berger | | 1751 | |
| Agave virginica L. var. tigrina Engelm. | Manfreda virginica (L.) Salisb. ex Rose | | i | Agave virginica L. var.tigrina Engelm. | Manfreda virginica (L.) Salisb. ex Rose | 1752 | 101029 |
| Agave wercklei F. A. C. Weber ex Wercklé | | a | | Agave wercklei F. A. C. Weber ex Wercklé | | 1753 | |
| Agave wislizeni Engelm. | Agave asperrima Jacobi | | | Agave wislizeni Engelm. | Agave asperrima Jacobi | 1754 | 5401 |
| Agave wocomahi Gentry | | a | | Agave wocomahi Gentry | | 1755 | |
| Agave xalapensis Roezl ex Jacobi | Agave polyacantha Haw. var. xalapensis (Roezl ex Jacobi) Gentry | | | Agave xalapensis Roezl ex Jacobi | Agave polyacantha Haw. var.xalapensis (Roezl ex Jacobi) Gentry | 1756 | 100839 |
| Agave yaquiana Trel. | Agave angustifolia Haw. | | | Agave yaquiana Trel. | Agave angustifolia Haw. | 1757 | 1692 |
| Agave zapupe Trel. | Agave angustifolia Haw. | | | Agave zapupe Trel. | Agave angustifolia Haw. | 1758 | 1692 |
| Agave zonata Trel. | Agave americana L. | | | Agave zonata Trel. | Agave americana L. | 1759 | 1690 |
| Agave applanata K. Koch | | a | | Agave applanata K. Koch | | 5400 | |
| Agave asperrima Jacobi | | a | | Agave asperrima Jacobi | | 5401 | |
| Agave atrovirens Karw. ex Salm-Dyck | | a | | Agave atrovirens Karw. ex Salm-Dyck | | 5402 | |
| Agave attenuata Salm-Dyck | | a | | Agave attenuata Salm-Dyck | | 5403 | |
| Agave aurea Brandegee | | a | | Agave aurea Brandegee | | 5404 | |
| Agave avellanidens Trel. | | a | | Agave avellanidens Trel. | | 5405 | |
| Agave bovicornuta Gentry | | a | | Agave bovicornuta Gentry | | 5406 | |
| Agave brachystachys Cav. | Manfreda brachystachys (Cav.) Rose | | | Agave brachystachys Cav. | Manfreda brachystachys (Cav.) Rose | 5407 | 101026 |
| Agave bracteosa S. Watson ex Engelm. | | a | | Agave bracteosa S. Watson ex Engelm. | | 5408 | |
| Agave brandegeei Trel. | Agave spp. | | | Agave brandegeei Trel. | Agave spp. | 5409 | 310656 |
| Agave brevispina Trel. | | a | | Agave brevispina Trel. | | 5410 | |
| Agave caeciliana A. Berger | Agave asperrima Jacobi | | | Agave caeciliana A. Berger | Agave asperrima Jacobi | 5411 | 5401 |
| Agave caespitosa Tod. | Agave pendula Schnittsp. | | | Agave caespitosa Tod. | Agave pendula Schnittsp. | 5412 | 100837 |
| Agave cantula Roxb. | | a | | Agave cantula Roxb. | | 5413 | |
| Agave carminis Trel. | Agave sobria Brandegee | | | Agave carminis Trel. | Agave sobria Brandegee | 5414 | 1736 |
| Agave cerulata Trel. | | a | | Agave cerulata Trel. | | 5415 | |
| Agave chiapensis Jacobi | | a | | Agave chiapensis Jacobi | | 5416 | |
| Agave chisosensis C. H. Müll. | Agave ×glomeruliflora (Engelm.) A. Berger | | | Agave chisosensis C. H. Müll. | Agave glomeruliflora (Engelm.) A. Berger | 5417 | 100821 |
| Agave chloracantha Salm-Dyck | Agave polyacantha Haw. | | | Agave chloracantha Salm-Dyck | Agave polyacantha Haw. | 5418 | 1717 |
| Agave chrysantha Peebles | | a | | Agave chrysantha Peebles | | 5419 | |
| Agave chrysoglossa I. M. Johnst. | | a | | Agave chrysoglossa I. M. Johnst. | | 5420 | |
| Agave colimana Gentry | | a | | Agave colimana Gentry | | 5421 | |
| Agave connochaetodon Trel. | Agave margaritae Brandegee | | | Agave connochaetodon Trel. | Agave margaritae Brandegee | 5422 | 5461 |
| Agave couesii Engelm. ex Trel. | Agave parryi Engelm. subsp. parryi var. couesii (Engelm. ex Trel.) Kearney & Peebles | | | Agave couesii Engelm. ex Trel. | Agave parryi Engelm. subsp. parryi var.couesii (Engelm. ex Trel.) Kearney & Peebles | 5423 | 1712 |
| Agave cubensis Jacq. | Furcraea hexapetala (Jacq.) Urb. | | | Agave cubensis Jacq. | Furcraea hexapetala (Jacq.) Urb. | 5424 | 70921 |
| Agave datylio F. A. C. Weber | | a | | Agave datylio F. A. C. Weber | | 5425 | |
| Agave deserti Engelm. | | a | | Agave deserti Engelm. | | 5426 | |
| Agave deweyana Trel. | Agave angustifolia Haw. var. deweyana (Trel.) Gentry | | | Agave deweyana Trel. | Agave angustifolia Haw. var.deweyana (Trel.) Gentry | 5427 | 100790 |
| Agave eduardii Trel. ex Standl. | Agave vilmoriniana A. Berger | | | Agave eduardii Trel. ex Standl. | Agave vilmoriniana A. Berger | 5428 | 1751 |
| Agave ellemeetiana Jacobi | | a | | Agave ellemeetiana Jacobi | | 5429 | |
| Agave expansa Jacobi | Agave americana L. subsp. americana var. expansa (Jacobi) Gentry | | | Agave expansa Jacobi | Agave americana L. subsp. americana var.expansa (Jacobi) Gentry | 5430 | 100786 |
| Agave falcata Engelm. | Agave striata Zucc. subsp. falcata (Engelm.) Gentry | | | Agave falcata Engelm. | Agave striata Zucc. subsp. falcata (Engelm.) Gentry | 5431 | 100846 |
| Agave ferox K. Koch | Agave salmiana Otto ex Salm-Dyck var. ferox (K. Koch) Gentry | | | Agave ferox K. Koch | Agave salmiana Otto ex Salm-Dyck var.ferox (K. Koch) Gentry | 5432 | 100840 |
| Agave filifera Salm-Dyck | | a | | Agave filifera Salm-Dyck | | 5433 | |
| Agave flexispina Trel. ex Standl. | | a | | Agave flexispina Trel. ex Standl. | | 5434 | |
| Agave foetida L. | Furcraea foetida (L.) Haw. | | | Agave foetida L. | Furcraea foetida (L.) Haw. | 5435 | 70919 |
| Agave fourcroydes Lem. | | a | | Agave fourcroydes Lem. | | 5436 | |
| Agave franzosinii Baker | | a | | Agave franzosinii Baker | | 5437 | |
| Agave funkiana K. Koch & C. D. Bouché | | a | | Agave funkiana K. Koch & C. D. Bouché | | 5438 | |
| Agave geminiflora (Tagl.) Ker Gawl. | | a | | Agave geminiflora (Tagl.) Ker Gawl. | | 5439 | |
| Agave ghiesbreghtii K. Koch | | a | | Agave ghiesbreghtii K. Koch | | 5440 | |
| Agave goldmaniana Trel. | Agave shawii Engelm. subsp. goldmaniana (Trel.) Gentry | | | Agave goldmaniana Trel. | Agave shawii Engelm. subsp. goldmaniana (Trel.) Gentry | 5441 | 100842 |
| Agave gracilipes Trel. | | a | | Agave gracilipes Trel. | | 5442 | |
| Agave harrisii Trel. | | a | | Agave harrisii Trel. | | 5443 | |
| Agave hartmannii S. Watson | Agave spp. | | | Agave hartmannii S. Watson | Agave spp. | 5444 | 310656 |
| Agave havardiana Trel. | | a | | Agave havardiana Trel. | | 5445 | |
| Agave hexapetala Jacq. | Furcraea hexapetala (Jacq.) Urb. | | | Agave hexapetala Jacq. | Furcraea hexapetala (Jacq.) Urb. | 5446 | 70921 |
| Agave hookeri Jacobi | | a | | Agave hookeri Jacobi | | 5447 | |
| Agave horrida Lem. ex Jacobi | | a | | Agave horrida Lem. ex Jacobi | | 5448 | |
| Agave huachucensis Baker | Agave parryi Engelm. subsp. parryi var. huachucensis (Baker) Little ex L. D. Benson | | | Agave huachucensis Baker | Agave parryi Engelm. subsp. parryi var.huachucensis (Baker) Little ex L. D. Benson | 5449 | 100835 |
| Agave indagatorum Trel. | | a | | Agave indagatorum Trel. | | 5450 | |
| Agave intrepida Greenm. | Agave dasyliriodes Jacobi & C. D. Bouché | | | Agave intrepida Greenm. | Agave dasyliriodes Jacobi & C. D. Bouché | 5451 | 50031 |
| Agave karwinskii Zucc. | | a | | Agave karwinskii Zucc. | | 5452 | |
| Agave kerchovei Lem. | | a | | Agave kerchovei Lem. | | 5453 | |
| Agave lechuguilla Torr. | | a | | Agave lechuguilla Torr. | | 5454 | |
| Agave lespinassei Trel. | Agave angustifolia Haw. | | | Agave lespinassei Trel. | Agave angustifolia Haw. | 5455 | 1692 |
| Agave letonae F. W. Taylor ex Trel. | Agave angustifolia Haw. var. letonae (F. W. Taylor ex Trel.) Gentry | | | Agave letonae F. W. Taylor ex Trel. | Agave angustifolia Haw. var.letonae (F. W. Taylor ex Trel.) Gentry | 5456 | 100792 |
| Agave lophantha Schiede | | a | | Agave lophantha Schiede | | 5457 | |
| Agave lurida Aiton | | a | | Agave lurida Aiton | | 5458 | |
| Agave macroacantha Zucc. | | a | | Agave macroacantha Zucc. | | 5459 | |
| Agave mapisaga Trel. | | a | | Agave mapisaga Trel. | | 5460 | |
| Agave margaritae Brandegee | | a | | Agave margaritae Brandegee | | 5461 | |
| Agave marmorata Roezl | | a | | Agave marmorata Roezl | | 5462 | |
| Agave mayoensis Gentry | Agave vilmoriniana A. Berger | | | Agave mayoensis Gentry | Agave vilmoriniana A. Berger | 5463 | 1751 |
| Agave mescal K. Koch, nom. nud. | Agave spp. | | | Agave mescal K. Koch, nom. nud. | Agave spp. | 5464 | 310656 |
| Agave mirabilis Trel. ex Standl. | Agave atrovirens Karw. ex Salm-Dyck var. mirabilis (Trel. ex Standl.) Gentry | | | Agave mirabilis Trel. ex Standl. | Agave atrovirens Karw. ex Salm-Dyck var.mirabilis (Trel. ex Standl.) Gentry | 5465 | 100798 |
| Agave mitriformis Jacobi | Agave salmiana Otto ex Salm-Dyck | | | Agave mitriformis Jacobi | Agave salmiana Otto ex Salm-Dyck | 5466 | 1727 |
| Agave morrisii Baker | Agave sobolifera Salm-Dyck | | | Agave morrisii Baker | Agave sobolifera Salm-Dyck | 5467 | 100843 |
| Agave murpheyi F. Gibson | | a | | Agave murpheyi F. Gibson | | 5468 | |
| Agave dasyliriodes Jacobi & C. D. Bouché | | a | | Agave dasyliriodes Jacobi & C. D. Bouché | | 50031 | |
| Agave colorata Gentry | | a | | Agave colorata Gentry | | 70059 | |
| Agave maculosa Hook. | Manfreda maculosa (Hook.) Rose | | | Agave maculosa Hook. | Manfreda maculosa (Hook.) Rose | 70060 | 23343 |
| Agave americana L. subsp. americana var. expansa (Jacobi) Gentry | | a | i | Agave americana L. subsp. americana var.expansa (Jacobi) Gentry | | 100786 | |
| Agave americana L. subsp. americana var. picta (Salm-Dyck) A. Terracc. | | a | i | Agave americana L. subsp. americana var.picta (Salm-Dyck) A. Terracc. | | 100788 | |
| Agave angustifolia Haw. var. deweyana (Trel.) Gentry | | a | i | Agave angustifolia Haw. var.deweyana (Trel.) Gentry | | 100790 | |
| Agave angustifolia Haw. var. letonae (F. W. Taylor ex Trel.) Gentry | | a | i | Agave angustifolia Haw. var.letonae (F. W. Taylor ex Trel.) Gentry | | 100792 | |
| Agave angustifolia Haw. var. nivea (Trel.) Gentry | | a | i | Agave angustifolia Haw. var.nivea (Trel.) Gentry | | 100793 | |
| Agave atrovirens Karw. ex Salm-Dyck var. mirabilis (Trel. ex Standl.) Gentry | | a | i | Agave atrovirens Karw. ex Salm-Dyck var.mirabilis (Trel. ex Standl.) Gentry | | 100798 | |
| Agave celsii Hook. | | a | | Agave celsii Hook. | | 100799 | |
| Agave celsii Hook. var. albicans (Jacobi) Gentry | | a | i | Agave celsii Hook. var.albicans (Jacobi) Gentry | | 100800 | |
| Agave cerulata Trel. subsp. nelsonii (Trel.) Gentry | | a | i | Agave cerulata Trel. subsp. nelsonii (Trel.) Gentry | | 100801 | |
| Agave datylio F. A. C. Weber var. vexans (Trel.) I. M. Johnst. | | a | i | Agave datylio F. A. C. Weber var.vexans (Trel.) I. M. Johnst. | | 100808 | |
| Agave deserti Engelm. subsp. pringlei (Engelm. ex Baker) Gentry | | a | i | Agave deserti Engelm. subsp. pringlei (Engelm. ex Baker) Gentry | | 100812 | |
| Agave ×glomeruliflora (Engelm.) A. Berger | | a | | Agave glomeruliflora (Engelm.) A. Berger | | 100821 | |
| Agave heteracantha Zucc. | Agave lophantha Schiede | | | Agave heteracantha Zucc. | Agave lophantha Schiede | 100827 | 5457 |
| Agave pampaniniana A. Berger | | a | | Agave pampaniniana A. Berger | | 100834 | |
| Agave parryi Engelm. subsp. parryi var. huachucensis (Baker) Little ex L. D. Benson | | a | i | Agave parryi Engelm. subsp. parryi var.huachucensis (Baker) Little ex L. D. Benson | | 100835 | |
| Agave parviflora Torr. subsp. flexiflora Gentry | | a | i | Agave parviflora Torr. subsp. flexiflora Gentry | | 100836 | |
| Agave pendula Schnittsp. | | a | | Agave pendula Schnittsp. | | 100837 | |
| Agave polyacantha Haw. var. xalapensis (Roezl ex Jacobi) Gentry | | a | i | Agave polyacantha Haw. var.xalapensis (Roezl ex Jacobi) Gentry | | 100839 | |
| Agave salmiana Otto ex Salm-Dyck var. ferox (K. Koch) Gentry | | a | i | Agave salmiana Otto ex Salm-Dyck var.ferox (K. Koch) Gentry | | 100840 | |
| Agave scabra auct. | Agave asperrima Jacobi | | | Agave scabra auct. | Agave asperrima Jacobi | 100841 | 5401 |
| Agave shawii Engelm. subsp. goldmaniana (Trel.) Gentry | | a | i | Agave shawii Engelm. subsp. goldmaniana (Trel.) Gentry | | 100842 | |
| Agave sobolifera Salm-Dyck | | a | | Agave sobolifera Salm-Dyck | | 100843 | |
| Agave sobria Brandegee subsp. roseana (Trel.) Gentry | | a | i | Agave sobria Brandegee subsp. roseana (Trel.) Gentry | | 100844 | |
| Agave striata Zucc. subsp. falcata (Engelm.) Gentry | | a | i | Agave striata Zucc. subsp. falcata (Engelm.) Gentry | | 100846 | |
| Agave virginica L. | Manfreda virginica (L.) Salisb. ex Rose | | | Agave virginica L. | Manfreda virginica (L.) Salisb. ex Rose | 100849 | 101029 |
| Agave xylonacantha Salm-Dyck | | a | | Agave xylonacantha Salm-Dyck | | 100851 | |
| Agave spp. | | a | | Agave spp. | | 310656 | |
| Agave bahamana Trel. | | a | | Agave bahamana Trel. | | 312528 | |
| Agave toumeyana Trel. ex Standl. subsp. bella (Breitung) Gentry | | a | i | Agave toumeyana Trel. ex Standl. subsp. bella (Breitung) Gentry | | 314387 | |
| Agave toumeyana Trel. ex Standl. var. bella Breitung | Agave toumeyana Trel. ex Standl. subsp. bella (Breitung) Gentry | | i | Agave toumeyana Trel. ex Standl. var.bella Breitung | Agave toumeyana Trel. ex Standl. subsp. bella (Breitung) Gentry | 314388 | 314387 |
| Agave guiengola Gentry | | a | | Agave guiengola Gentry | | 317432 | |
| Agave hybr. | | a | | Agave hybr. | | 317500 | |
| Agave ×arizonica Gentry & J. H. Weber | | a | | Agave arizonica Gentry & J. H. Weber | | 319150 | |
| Agave eggersiana Trel. | | a | | Agave eggersiana Trel. | | 400536 | |
| Agave americana L. subsp. americana var. americana | | a | i | Agave americana L. subsp. americana var.americana | | 400900 | |
| Agave angustifolia Haw. var. angustifolia | | a | i | Agave angustifolia Haw. var.angustifolia | | 400901 | |
| Agave atrovirens Karw. ex Salm-Dyck var. atrovirens | | a | i | Agave atrovirens Karw. ex Salm-Dyck var.atrovirens | | 400902 | |
| Agave schottii Engelm. var. schottii | | a | i | Agave schottii Engelm. var.schottii | | 401100 | |
| Agave schottii Engelm. var. treleasei (Toumey) Kearney & Peebles | | a | i | Agave schottii Engelm. var.treleasei (Toumey) Kearney & Peebles | | 401101 | |
| Agave treleasei Toumey | Agave schottii Engelm. var. treleasei (Toumey) Kearney & Peebles | | | Agave treleasei Toumey | Agave schottii Engelm. var.treleasei (Toumey) Kearney & Peebles | 401102 | 401101 |
| Agave parryi Engelm. subsp. parryi var. parryi | | a | i | Agave parryi Engelm. subsp. parryi var.parryi | | 401842 | |
| Agave elongata Jacobi | Agave angustifolia Haw. | | | Agave elongata Jacobi | Agave angustifolia Haw. | 407163 | 1692 |
| Agave kewensis Jacobi | | a | | Agave kewensis Jacobi | | 410596 | |
| Agave atrovirens auct. | Agave salmiana Otto ex Salm-Dyck | | | Agave atrovirens auct. | Agave salmiana Otto ex Salm-Dyck | 410673 | 1727 |
| Agave rigida Mill. | | a | | Agave rigida Mill. | | 414707 | |
| Agave wightii J. R. Drumm. & Prain | Agave angustifolia Haw. | | | Agave wightii J. R. Drumm. & Prain | Agave angustifolia Haw. | 423597 | 1692 |
| Agave wrightii J. R. Drumm. | Agave angustifolia Haw. | | | Agave wrightii J. R. Drumm. | Agave angustifolia Haw. | 426661 | 1692 |
| Agave parviflora Torr. subsp. parviflora | | a | i | Agave parviflora Torr. subsp. parviflora | | 430642 | |
| Agave toumeyana Trel. ex Standl. subsp. toumeyana | | a | i | Agave toumeyana Trel. ex Standl. subsp. toumeyana | | 430643 | |
| Agave scabra Salm-Dyck | Agave parryi Engelm. subsp. parryi var. parryi | | | Agave scabra Salm-Dyck | Agave parryi Engelm. subsp. parryi var.parryi | 430644 | 401842 |
| Agave americana L. subsp. americana | | a | i | Agave americana L. subsp. americana | | 430645 | |
| Agave americana L. subsp. protamericana Gentry | | a | i | Agave americana L. subsp. protamericana Gentry | | 430646 | |
| Agave shawii Engelm. subsp. shawii | | a | i | Agave shawii Engelm. subsp. shawii | | 430647 | |
| Agave parryi Engelm. subsp. parryi | | a | i | Agave parryi Engelm. subsp. parryi | | 430648 | |
| Agave parryi Engelm. subsp. neomexicana (Wooton & Standl.) Ullrich | | a | i | Agave parryi Engelm. subsp. neomexicana (Wooton & Standl.) Ullrich | | 430650 | |
| Agave deserti Engelm. subsp. deserti | | a | i | Agave deserti Engelm. subsp. deserti | | 430651 | |
| Agave deserti Engelm. subsp. simplex Gentry | | a | i | Agave deserti Engelm. subsp. simplex Gentry | | 430653 | |
| Agave vivipara L. var. deweyana (Trel.) P. I. Forst. | Agave angustifolia Haw. var. deweyana (Trel.) Gentry | | i | Agave vivipara L. var.deweyana (Trel.) P. I. Forst. | Agave angustifolia Haw. var.deweyana (Trel.) Gentry | 446899 | 100790 |
| Agave vivipara L. var. letonae (F. W. Taylor ex Trel.) P. I. Forst. | Agave angustifolia Haw. var. letonae (F. W. Taylor ex Trel.) Gentry | | i | Agave vivipara L. var.letonae (F. W. Taylor ex Trel.) P. I. Forst. | Agave angustifolia Haw. var.letonae (F. W. Taylor ex Trel.) Gentry | 446900 | 100792 |
| Agave vivipara L. var. nivea (Trel.) P. I. Forst. | Agave angustifolia Haw. var. nivea (Trel.) Gentry | | i | Agave vivipara L. var.nivea (Trel.) P. I. Forst. | Agave angustifolia Haw. var.nivea (Trel.) Gentry | 446901 | 100793 |
| Agave vivipara L. | | a | | Agave vivipara L. | | 446902 | |
| Agave vivipara auct. nonn. | Agave angustifolia Haw. | | | Agave vivipara auct. nonn. | Agave angustifolia Haw. | 446903 | 1692 |
| Agave durangensis Gentry | | a | | Agave durangensis Gentry | | 467625 | |
| Agave rhodacantha Trel. | | a | | Agave rhodacantha Trel. | | 477867 | |
| Agave utahensis Engelm. var. utahensis | | a | i | Agave utahensis Engelm. var.utahensis | | 478541 | |
| Agave celsii Hook. var. celsii | | a | i | Agave celsii Hook. var.celsii | | 480263 | |
| Agave cerulata Trel. subsp. cerulata | | a | i | Agave cerulata Trel. subsp. cerulata | | 480265 | |
| Agave datylio F. A. C. Weber var. datylio | | a | i | Agave datylio F. A. C. Weber var.datylio | | 480266 | |
| Agave polyacantha Haw. var. polyacantha | | a | i | Agave polyacantha Haw. var.polyacantha | | 480267 | |
| Agave salmiana Otto ex Salm-Dyck var. salmiana | | a | i | Agave salmiana Otto ex Salm-Dyck var.salmiana | | 480268 | |
| Agave sobria Brandegee subsp. sobria | | a | i | Agave sobria Brandegee subsp. sobria | | 480269 | |
| Agave striata Zucc. subsp. striata | | a | i | Agave striata Zucc. subsp. striata | | 480270 | |
| Agave heteracantha Zucc. f. glomeruliflora Engelm. | Agave ×glomeruliflora (Engelm.) A. Berger | | i | Agave heteracantha Zucc. f. glomeruliflora Engelm. | Agave glomeruliflora (Engelm.) A. Berger | 481050 | 100821 |
| Agave heteracantha Zucc. f. heteracantha | Agave lophantha Schiede | | i | Agave heteracantha Zucc. f. heteracantha | Agave lophantha Schiede | 481051 | 5457 |
| Agave virginica L. var. virginica | Manfreda virginica (L.) Salisb. ex Rose | | i | Agave virginica L. var.virginica | Manfreda virginica (L.) Salisb. ex Rose | 482119 | 101029 |
| Agave desmettiana Jacobi | | a | | Agave desmettiana Jacobi | | 482205 | |
| Agave parryi Engelm. var. truncata Gentry | | a | i | Agave parryi Engelm. var.truncata Gentry | | 482206 | |
| Agave tenuifolia Zamudio & E. Sánchez | | a | | Agave tenuifolia Zamudio & E. Sánchez | | 482207 | |