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

Allium geyeri S. Watson
Geyer's onion
Amaryllidaceae (Lily family)
(Previously in Liliaceae)

Introduction to Vascular Plants

© Adolf Ceska  Email the photographer   (Photo ID #5865)

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Distribution of Allium geyeri
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Allium geyeri var. tenerum

Species Information

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Perennial herb from an egg-shaped, scaly bulb, the bulbs often clustered, the outer scales brownish, fibrous, in a coarse-meshed network, the inner scales whitish; flowering stems erect, 10-50 cm tall, slender, cylindric to somewhat angled, smooth.
Basal leaves usually 3 or more, persisting, linear, channeled, shorter than the flowering stem, 2-5 mm wide, smooth, the margins entire; stem leaves lacking.
Inflorescence a terminal umbel of several to many, stalked flowers, above 2 or 3 membranous, egg-shaped to lanceolate bracts, the stalks longer than the flowers; flowers pink, rarely white, bell-shaped, of 6 distinct tepals, mostly replaced by bulbils; tepals usually 6-8 mm long, egg-shaped to lanceolate, somewhat long-tapering to pointed or blunt tips, sometimes obscurely toothed on the margins, erect, in fruit becoming tough-keeled and enclosing the capsule; stamens 6, usually shorter than the tepals; pistil 1, 3-chambered.
Capsules, more or less egg-shaped, 3-lobed, with 6 low, knob-like crests; seeds 6 or fewer, shiny-black.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist meadows, banks, and rock outcrops in the lowland, steppe and montane zones; infrequent on Vancouver Island and in the Fraser and Thompson River valleys; E to MB and S to NM, AZ, NV and OR.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Allium geyeri

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




Elevation (metres) 1244 1244 1244
Slope Gradient (%) 5 5 5
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
230 229 230
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 4 4
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: IDF(1)


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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References