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

Salix cascadensis Cockerell
Cascade willow
Salicaceae (Willow family)

Introduction to Vascular Plants

© Jim Riley  Email the photographer   (Photo ID #950)

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Distribution of Salix cascadensis
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Species Information

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General:
Dwarf shrubs, 1-4 cm tall, forming rhizomatous mats; branches erect, flexible at base; twigs yellowish, smooth.
Leaves:
Alternate, simple, narrowly elliptic to elliptic, 9-26 mm long, 3.8-7.5 mm wide, lower surface glaucous, smooth or sparsely long soft-hairy, hairs white, upper surface shiny, smooth or sparsely long soft-hairy, margins entire, bases and tips pointed; leaf stalks without glandular dots at top; stipules absent.
Flowers:
Unisexual, lacking sepals and petals, borne in catkins which flower as leaves emerge, the catkins stout, on leafy twigs; floral bracts dark, hairs wavy or straight; stamens 2; ovaries 1, smooth or hairy; styles 0.3-1 mm long.
Fruits:
Capsules which split open to release the seeds, each of which is surrounded by a tuft of hairs; stalks 0-0.6 mm long.
Notes:
A phase of this species with smooth ovaries has been named var. thompsonii Brayshaw.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry rocky slopes, ridges, fellfields and meadows in the high subalpine and alpine zones; infrequent in SC BC; S to CO, UT, ID and WA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Salix cascadensis

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) 1143 2185 2320
Slope Gradient (%) 0 18 65
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 6 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 2 7
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
50
Modal BEC Zone Class
AT
All BEC Zones (# of stations/zone) species was recorded in: AT(33), ESSF(11), IMA(5), SBS(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Salix brownii var. tenera (Anderss.) M.E. Jones
Salix cascadensis var. thompsonii Brayshaw
Salix tenera Anderss.

Taxonomic and Nomenclatural Links

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General References