| Asteraceae | |
Lactuca hirsuta var. albiflora
| (Torr. & A. Gray) Shinners | Field & Lab. 23(2): 36 | 1955 |
| Asteraceae | |
Lactuca hirsuta fo. calvescens
| Fernald | | 1920 |
| Asteraceae | |
Lactuca hirsuta fo. calvifolia
| Fernald | Rhodora 22(261): 156 | 1920 |
| Asteraceae | |
Lactuca hirsuta var. genuina
| Fernald | Rhodora 40(480): 481 | 1938 |
| Asteraceae | |
Lactuca hirsuta fo. hirsuta
| | | |
| Asteraceae | |
Lactuca hirsuta var. hirsuta
| | | |
| Asteraceae | |
Lactuca hirsuta var. sanguinea
| (Bigelow) Fernald | Rhodora 40(480): 481 | 1938 |