| Chondrosum gracile Kunth | Bouteloua gracilis (Kunth) Lag. ex Griffiths | | | Chondrosum gracile Kunth | Bouteloua gracilis (Kunth) Lag. ex Griffiths | 10320 | 7527 |
| Chondrosum hirsutum (Lag.) Sweet ex R. W. Pohl | Bouteloua hirsuta Lag. | | | Chondrosum hirsutum (Lag.) Sweet ex R. W. Pohl | Bouteloua hirsuta Lag. | 404255 | 7529 |
| Chondrosum simplex (Lag.) Kunth | Bouteloua simplex Lag. | | | Chondrosum simplex (Lag.) Kunth | Bouteloua simplex Lag. | 409438 | 310137 |
| Chondrosum barbatum (Lag.) Clayton | Bouteloua barbata Lag. var. barbata | | | Chondrosum barbatum (Lag.) Clayton | Bouteloua barbata Lag. var.barbata | 409439 | 404473 |
| Chondrosum trifidum (Thunb.) Clayton | Bouteloua trifida Thunb. | | | Chondrosum trifidum (Thunb.) Clayton | Bouteloua trifida Thunb. | 463859 | 463858 |