Epilobium glaberrimum subsp. fastigiatum Barbey (Nutt.) Hoch & P.H. Raven
smooth willowherb (glaucus willowherb)
Onagraceae (Evening Primrose family)

Introduction to Vascular Plants

Photograph

© Curtis Bjork     (Photo ID #15939)


Map

E-Flora BC Static Map

Distribution of Epilobium glaberrimum subsp. fastigiatum
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Species Information

General:
Perennial herb from short, scaly stolon; stems 8-35 cm tall, usually simple, clumped, glabrous with white bloom.
Leaves:
Narrowly lanceolate to egg-shaped, 1-3.4 cm long, 7-18 mm wide, entire to finely toothed, glabrous with white bloom; more or less unstalked, clasping.
Flowers:
Inflorescence erect, terminal; hypanthium 0.7-2.3 mm long; petals 2.5-7 mm long, pink to rose-purple, sometimes white, notched at tip; sepals 1.6-4.0 mm long; anthers 0.5-1 mm long; ovaries 1-3.4 cm long, sparsely short stiff-hairy sometimes with glandular hairs; styles 2.2-3.6 mm long; stigmas club-shaped.
Fruits:
Capsules, 2-5.5 cm long, linear, usually curved, sometimes sparsely hairy; stalks 5-17 mm long; seeds 0.8-1.3 mm long, pimply in lengthwise rows.

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 streambanks, rocky slopes, and open forests in the montane to alpine zones; rare in S BC; E to AB and S to MT, UT and CA.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Epilobium glaberrimum var. fastigiatum (Nutt.) Trel. ex Jepson
Epilobium platyphyllum Rydb.