Epilobium oregonense Hausskn.
Oregon willowherb
Onagraceae (Evening Primrose family)
Introduction to Vascular Plants
Oregon willowherb
Onagraceae (Evening Primrose family)
Introduction to Vascular Plants
Photograph
Species Information
General:
Perennial herb, often matted, stolons thread-like, sprawling, with minute, rounded leaves; stems erect, to 40 cm tall, delicate, nearly glabrous, not hairy in lines, purplish above.
Leaves:
Mostly on lower part of stem, round below to linear above, 5-25 mm long, tips blunt to round, clasping at base; unstalked.
Flowers:
Inflorescence very open, sparsely glandular; hypanthium 0.8-1.5 mm long; petals 2-8 mm long, white to rose-purple, notched at tip; sepals 1-4 mm long; stigmas sometimes cylindric.
Fruits:
Capsules, 2-5 cm long; stalks 2-6.5 cm long; seeds 1-1.4 mm long, pimply.
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.
Illustration Source: The Illustrated Flora of British Columbia
Habitat and Range
Moist slopes, boggy areas and open forests in the montane zone; rare in BC, known only from Wells Gray Park and Mt. Arrowsmith; S to ID, WY and CA.Status Information
Synonyms
Synonyms and Alternate Names:
Epilobium alpinum var. gracillimum (Trel.) C.L. Hitchc.