Onagraceae
Glaucus willowherb
Epilobium glaberrimum
- Family
- Onagraceae
- Genus
- Epilobium
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Common names
By language (1)
- English
- Glaucus willowherb
Synonyms
- Epilobium fastigiatum subsp. glaberrimum Piper
- Epilobium fastigiatum var. glaberrimum (Barbey) Piper
- Epilobium glaberrimum subsp. glaberrimum
Flowers
- Flower colour
- purple (USDA PLANTS Database)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos
FlowerPhoto: Wendy McCrady, CC BY 4.0, from iNaturalist 
FlowerPhoto: Aaron H, CC0, from iNaturalist 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, from Wikimedia Commons
More in Epilobium
- FireweedEpilobium angustifoliumOnagraceae
- Great willowherbEpilobium hirsutumOnagraceae
- Broad-leaved willowherbEpilobium montanumOnagraceae
- Marsh willowherbEpilobium palustreOnagraceae
- Smallflower hairy willowherbEpilobium parviflorumOnagraceae
- Square-stemmed willowherbEpilobium tetragonumOnagraceae
- Epilobium collinumOnagraceae
- Pimpernel willowherbEpilobium anagallidifoliumOnagraceae
- Fringed willowherbEpilobium ciliatumOnagraceae
- Dwarf fireweedEpilobium latifoliumOnagraceae
- Chickweed willowherbEpilobium alsinifoliumOnagraceae
- Spear leaved willow herbEpilobium lanceolatumOnagraceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.