Penstemon serrulatus

Cascade penstemon

Menzies ex Sm. 1814 - A.Rees, Cycl. 26: n.ยบ 5 (1814)

Specifications

Images

Synonyms

Penstemon themisteri E.Vilm.

Penstemon diffusus f. albiflorus Hardin

Penstemon diffusus Douglas

Penstemon argutus Paxton