| Asteraceae | |
Liatris squarrosa var. alabamensis
| (Alexander ex Small) Gaiser | Rhodora 48(576): 398 | 1946 |
| Asteraceae | |
Liatris squarrosa var. compacta
| Torr. & A. Gray | Fl. N. Amer. 2(1): 68 | 1841 |
| Asteraceae | |
Liatris squarrosa [unranked] glabrata
| (Rydb.) F.C. Gates | Trans. Kansas Acad. Sci. 42: 138 | 1939 [1940] |
| Asteraceae | |
Liatris squarrosa var. glabrata
| (Rydb.) Gaiser | Rhodora 48(576): 401 | 1946 |
| Asteraceae | |
Liatris squarrosa var. gracilenta
| Gaiser | Rhodora 48(576): 397–398 | 1946 |
| Asteraceae | |
Liatris squarrosa unranked hirsuta
| (Rydb.) F.C. Gates | Trans. Kansas Acad. Sci. 42: 138 | 1939 [1940] |
| Asteraceae | |
Liatris squarrosa var. hirsuta
| (Rydb.) Gaiser | Rhodora 48(576): 399 | 1946 |
| Asteraceae | |
Liatris squarrosa var. intermedia
| (Lindl.) DC. | Prodr. 5: 129 | 1836 |
| Asteraceae | |
Liatris squarrosa var. squarrosa
| | | |