| Yucca treculeana Carrière, 1858 |
| Yucca treculeana var. canaliculata (Hook.) Trel., 1902 |
| Yucca treleasei J.F. Macbr., 1918 |
| Yucca valida Brandegee, 1889 |
| Yucca whipplei Torr., 1859 |
| Yucca whipplei subsp. eremica Epling & A.L. Haines, 1957 |
| Yucca whipplei subsp. whipplei Torr., 1859 |
| Yucca whipplei var. graminifolia (Wood) Baker, 1880 |
| Yucca whipplei var. newberry (McKelvey) Hochstätter, 2000 |
| Yucca whipplei var. typica A. Haines, 1941 |
| Yucca yucatana Engelm., 1873 |