Onagraceae
Denseflower willowherb
Epilobium densiflorum
- Family
- Onagraceae
- Genus
- Epilobium
Pet and kid safety: not checked yet. Check pet-safe plants

Is yours looking unwell? Scan your plant — free
Common names
By language (1)
- English
- Denseflower willowherb
Synonyms
- Boisduvalia bipartita Greene
- Boisduvalia densiflora (Lindl.) Bartl.
- Boisduvalia densiflora f. imbricata (Greene) Munz
- Boisduvalia densiflora var. bipartita (Greene) Jeps.
- Boisduvalia densiflora var. genuina Munz
- Boisduvalia densiflora var. imbricata Greene
- Boisduvalia densiflora var. montana Jeps.
- Boisduvalia densiflora var. pallescens Suksd.
- Boisduvalia densiflora var. salicina (Rydb.) Munz
- Boisduvalia douglasii Spach
- Boisduvalia imbricata A.Heller
- Boisduvalia salicina Rydb.
- Boisduvalia sparsiflora A.Heller
- Boisduvalia sparsifolia A.Nelson & P.B.Kenn.
- Oenothera densiflora Lindl.
- Oenothera densiflora var. imbricata H.Lév.
- Oenothera salicina Nutt. ex Torr. & A.Gray
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos

Photo: Stickpen, CC0, from Wikimedia Commons 
Photo: Willamette Biology, CC BY-SA 2.0, 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.