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

Salix petiolaris Sm.
meadow willow
Salicaceae (Willow family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #24974)

E-Flora BC Static Map
Distribution of Salix petiolaris
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Species Information

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General:
Dioecious shrubs, 1-6 m tall, not colonial; branches erect, flexible at base; twigs yellowish, sparsely to moderately hairy.
Leaves:
Alternate, simple, strap-shaped or very narrowly elliptic, 4-11 cm long, 0.6-2 cm wide, lower surface glaucous, silky to nearly smooth, hairs white and rust-coloured, upper surface dull or shiny, smooth or hairy, margins entire to toothed, bases and tips pointed; leaf stalks without glandular dots at top; stipules absent or rudimentary.
Flowers:
Unisexual, lacking sepals and petals, borne in catkins which flower as leaves emerge or just before them, the catkins stout, unstalked or on leafy twigs; floral bracts dark, hairs straight; stamens 2; ovaries 1, hairy; styles 0-0.3 mm long.
Fruits:
Capsules which split open to release the seeds, each of which is surrounded by a tuft of hairs; stalks 1.5-4 mm long.
Notes:
Entire-leaved forms of this species are sometimes difficult to separate from S. geyeriana. See the latter species for comments.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet thickets in the lower montane zone; rare in N BC; N to S NT, E to NB and S to NJ, MO, CO and WA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Salix petiolaris

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) 630 933 1350
Slope Gradient (%) 0 8 30
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
70 120 164
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 5 7
Modal Nutrient Regime
Class
D
Number of field plots
 species was recorded in:
8
Modal BEC Zone Class
BWBS
All BEC Zones (# of stations/zone) species was recorded in: BWBS(7), ESSF(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 subsericea (Anderss.) Schneid.
Salix ×subsericea (Andersson) C.K. Schneid.
Salix subsericea (Andersson) C.K. Schneid.
Salix gracilis Andersson
Salix gracilis var. rosmarinoides Andersson
Salix gracilis var. textoris Fernald
Salix neoforbesii Toepffer
Salix petiolaris var. angustifolia Andersson
Salix petiolaris var. gracilis (Andersson) Andersson
Salix petiolaris var. rosmarinoides (Andersson) C.K. Schneid.
Salix petiolaris var. subsericea Andersson
Salix sericea var. subsericea (Andersson) Rydb.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References