E-Flora BC: Electronic Atlas of the Flora of British Columbia

Epilobium glaberrimum Barbey
Glaucous Willowherb (glaucus willowherb; smooth willowherb)
Onagraceae (Evening Primrose family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #14083)

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Distribution of Epilobium glaberrimum
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SUBTAXA PRESENT IN BC
Epilobium glaberrimum ssp. fastigiatum

Species Information

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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.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Purple
Blooming Period:
Mid Summer
Fruit/Seed characteristics:
Colour: White
Present over the Summer
Source:  The USDA

Habitat / 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.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Epilobium glaberrimum

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
Site Information
 Value / Class

Minimum

Average

Maximum
Elevation (metres) 0 956 2010
Slope Gradient (%) 0 8 75
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W] 		20 176 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		3 5 8
Modal Nutrient Regime
Class		 D
Number of field plots
 species was recorded in:		 95
Modal BEC Zone Class
 ESSF
All BEC Zones (# of stations/zone) species was recorded in: BAFA(2), BG(2), BWBS(3), CDF(1), CWH(24), ESSF(28), ICH(6), IDF(2), MH(1), MS(8), SBPS(1), SBS(14)

Taxonomic and Nomenclatural Links


Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-05-18 3:31:57 AM ]
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