| Euphorbiaceae | |
Euphorbia villifera var. crepuscula
| L.C. Wheeler | Contr. Gray Herb. 127: 61 | 1939 |
| Euphorbiaceae | |
Euphorbia villifera var. nuda
| Engelm. ex Boiss. | Prodr. 15(2.1): 45 | 1862 |
| Euphorbiaceae | ** |
Euphorbia villifera var. typica
| L.C. Wheeler | Rhodora 43: 247 | 1941 |
| Euphorbiaceae | |
Euphorbia villifera var. villifera
| | | |