Chamaenerion latifolium
broad-leaved willowherb
Onagraceae (Evening Primrose family)

Introduction to Vascular Plants

Photograph

© Jim Dickson     (Photo ID #342)


Map

E-Flora BC Static Map

Distribution of Chamaenerion latifolium
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from a stout stem-base, without rhizomes, often forming colonies; stems descending to ascending, (5) 10-30 (70) cm long/tall, simple to freely branched, often with bloom.
Leaves:
Opposite below, usually alternate above, broadly lanceolate to elliptic or egg-shaped, 1.5-8 cm long, 0.5-3 cm wide, entire to finely toothed, with a bloom, usually densely short stiff-hairy; nearly stalkless.
Flowers:
Inflorescence 3- to 12-flowered terminal raceme, bracts leaf-like, buds nodding; hypanthium absent; petals egg-shaped to broadly egg-shaped, 1.3-3.2 cm long, the upper 2 wider than lower 2, rose-purple to pale purple or occasionally white, short-clawed; sepals joined directly to the top of the ovary, lanceolate, 10-24 mm long, purplish; ovaries 1.2-2.8 cm long, greyish-short-hairy; anthers 1.4-3.2 mm long; styles 3.5-10 mm long, shorter than stamens, glabrous; stigmas deeply 4-lobed.
Fruits:
Capsules, 3-10 cm long, glabrous or short stiff-hairy; stalks 3-40 mm long; seeds 1.3-2.4 mm long, narrowly egg-shaped, netted, tuft of hairs white, 9-17 mm long, persisting.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

Moist river bars, scree slopes, and meadows in the montane to alpine zones; common throughout BC, especially northward, except rare on Queen Charlotte Islands and adjacent mainland; circumpolar, N to AK, YT and NT, E to PQ and S to SD, CO and CA; Eurasia.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Epilobium latifolium L.