Cistaceae | |
Helianthemum canadense var. canadense
| | | |
Cistaceae | |
Helianthemum canadense var. obtusum
| Alph. Wood | Class-book Bot. (ed. 1861) 246 | 1861 |
Cistaceae | |
Helianthemum canadense var. sabulonum
| Fernald | Rhodora 43(515): 615–616, pl. 691, figs.1–2 | 1941 |
Cistaceae | |
Helianthemum canadense var. walkerae
| W.H. Evans | Bot. Gaz. 15(8): 211 | 1890 |