Epilobium minutum Lindl. ex Lehm.
small-flowered willowherb (chaparral willowherb)
Onagraceae (Evening Primrose family)

Introduction to Vascular Plants

Photograph

© Adolf Ceska     (Photo ID #11254)

Map

E-Flora BC Static Map

Distribution of Epilobium minutum
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Species Information

General:
Annual herb from a short taproot; stems 3-45 cm tall, usually freely branched, nearly glabrous to short stiff-hairy, peeling below.
Leaves:
Mostly opposite, narrowly elliptic to spoon-shaped, 5-20 mm long, nearly glabrous; short-stalked.
Flowers:
Inflorescence few-flowered, flowers short-stalked in axils of somewhat reduced, alternate leaves; hypanthium cup-shaped, scarcely 1 mm long; petals 2-5 mm long, white to rose, notched at tip; sepals 2-4 mm long; stigmas entire, occasionally slightly lobed.
Fruits:
Capsules, linear club-shaped, slightly curved, nearly glabrous, 1-2.5 cm long; seeds 0.8-1 mm long, netted, tuft of hairs pale yellowish.
Notes:
Similar to and often confused with E. foliosum.

Source:  The 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.

Ecology

Ecological Framework for Epilobium minutum

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

Avg

Min

Max
Elevation (metres)
 1282 137 2305
Slope Gradient (%)
 33 0 420

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

 200 20 326
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		3 0 8
Modal Nutrient Regime
Class
 C
# of field plots
 species was recorded in:
 127
Modal BEC Zone Class
 ESSF

All BEC Zones (# of stations/zone) species was recorded in

 AT(1), BG(4), BWBS(1), CDF(3), CMA(1), CWH(11), ESSF(37), ICH(14), IDF(19), IMA(1), MS(13), PP(5), SBS(3)

Habitat and Range

Vernally moist rocky bluffs and wet areas and dry rocky slopes and gravelly banks in the lowland to lower montane zones; frequent in S and W BC; S to MT and CA.

Source:  The Illustrated Flora of British Columbia

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