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

Salix geyeriana Andersson
Geyer's willow (Geyer willow)
Salicaceae (Willow family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #20012)

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

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General:
Dioecious shrubs, 1-5 m tall, not colonial; branches erect, flexible at base, strongly glaucous or not; twigs yellowish to violet, smooth or hairy.
Leaves:
Alternate, simple, strap-shaped to narrowly elliptic, 3-7.5 cm long, 0.7-1.4 cm wide, lower surface glaucous, silky to nearly smooth, hairs white and rust-coloured, upper surface shiny, silky to nearly smooth, 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, or just before them, more or less globe-shaped, on leafy twigs; floral bracts pale, smooth or hairy, hairs wavy or straight; stamens 2; ovaries 1, hairy; styles 0.1-0.2 mm long.
Fruits:
Capsules which split open to release the seeds, each of which is surrounded by a tuft of hairs; stalks 1-2.8 mm long.
Notes:
Vegetative plants of this species are sometimes difficult to distinguish from S. petiolaris. The branches of S. geyeriana do not always show the characteristic glaucousness, especially on Vancouver Island and the branches of S. petiolaris are sometimes sparsely glaucous.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Yellow
Blooming Period:
Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Fall
Source:  The USDA

Habitat / Range

Wet to moist streamsides, lakeshores and sedge meadows in the lowland, steppe and montane zones; infrequent in S BC; S to NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Salix geyeriana

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) 540 1031 1698
Slope Gradient (%) 0 3 10
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
126 167 325
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 5 8
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
12
Modal BEC Zone Class
BWBS
All BEC Zones (# of stations/zone) species was recorded in: BWBS(4), ESSF(2), ICH(1), IDF(1), MS(3), SBPS(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 geyeriana subsp. argentea (Bebb) E. Murray
Salix geyeriana subsp. meleina
Salix geyeriana var. argentea (Bebb) C.K. Schneid.
Salix geyeriana var. meleina J.K. Henry
Salix macrocarpa Nutt.
Salix macrocarpa var. argentea Bebb
Salix meleina (J.K. Henry) G.N. Jones

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References