Dasylirion (commonly referred to as sotols or hair-trees) is a genus of North American flowering succulent plants in the asparagus family, all native to Mexico and the American Southwest (Arizona, New Mexico, Texas).[1] In the APG III classification system, Dasylirion is placed in the family Asparagaceae, subfamily Nolinoideae (formerly the family Ruscaceae).
Dasylirion are dioecious, with the male and female flowers on separate plants.[2]
| Image | Scientific name | Distribution |
|---|---|---|
| Dasylirion acrotrichum (Schiede) Zucc. | Hidalgo, Puebla, Jalisco | |
| Dasylirion berlandieri S. Wats. | Nuevo León, Tamaulipas | |
| Dasylirion cedrosanum Trel. | Coahuila, Durango, Zacatecas | |
| Dasylirion durangense Trel. | Durango, Chihuahua, Zacatecas, Coahuila | |
| Dasylirion gentryi Bogler | Sonora, Chihuahua | |
| Dasylirion glaucophyllum Hook. | Hidalgo | |
| Dasylirion graminifolium (Zucc.) Zucc. | Aguascalientes, Jalisco, Zacatecas | |
| Dasylirion leiophyllum Engelm. ex Trel. (syn. D. heteracanthum I.M.Johnst.) | Chihuahua, Coahuila; Texas, New Mexico | |
| Dasylirion longissimum Lem. | San Luis Potosí, Hidalgo | |
| Dasylirion longistylum J.F.Macbr. | San Luis Potosí | |
| Dasylirion lucidum Rose | Oaxaca, Puebla | |
| Dasylirion miquihuanense Bogler | Nuevo León, Tamaulipas | |
| Dasylirion occidentalis Bogler ex Hochstätter | Aguascalientes | |
| Dasylirion palaciosii Rzed. | San Luis Potosí | |
| Dasylirion parryanum Trel. | San Luis Potosí | |
| Dasylirion quadrangulatum S.Watson | Nuevo León, Tamaulipas | |
| Dasylirion sereke Bogler | Chihuahua | |
| Dasylirion serratifolium (Karw. ex Schult. & Schult.f.) Zucc. | Oaxaca | |
| Dasylirion simplex Trel. | Durango | |
| Dasylirion texanum Scheele | Coahuila & Texas | |
| Dasylirion treleasei (Bogler) Hochstätter | Hidalgo, San Luis Potosí | |
| Dasylirion wheeleri S.Watson ex Rothr. | Arizona, New Mexico, Texas; Chihuahua, Sonora | |