Noun: Penstemon serrulatus
- Whorls of deep blue to dark purple flowers at tips of erect leafy stems; moist places from British Columbia to Oregon
"Penstemon serrulatus flourished near the waterfall";
- cascade penstemon
Type of: wild flower, wildflower
Part of: genus Penstemon, Penstemon, Pentstemon
Encyclopedia: Penstemon serrulatus