Allium amplectens Hook.
slimleaf onion (narrowleaf onion)
Amaryllidaceae (Lily family)
(Previously in Liliaceae)

Introduction to Vascular Plants


© Rod Innes     (Photo ID #6768)


E-Flora BC Static Map

Distribution of Allium amplectens
Click here to view the full interactive map and legend

Species Information

Perennial herb from an egg-shaped to nearly globe-shaped, scaly bulb, the outer scales brownish to grey, with a wavy, fibrous network, the inner scales red or white; flowering stems erect, 10-40 cm tall, slender, round in cross-section, smooth.
Basal leaves 2 to 4, withering early, linear, channeled to cylindric, shorter than the flowering stem, very slender, smooth, the margins entire; stem leaves lacking.
Inflorescence a compact, often head-like, terminal umbel of several to many, stalked flowers, above 2 to 3 membranous, egg-shaped bracts, the stalks 0.5-1.5 cm long; flowers white to pink, saucer-shaped, of 6 distinct tepals, the tepals 5-9 mm long, lanceolate with pointed tips, spreading, in fruit becoming papery and folding over the ovaries; stamens 6, nearly as long as the tepals; pistil 1, 3-chambered.
Capsules, more or less egg-shaped, 3-lobed, with 6 low, rounded crests; seeds 6 or fewer, black.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Allium amplectens

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)
Slope Gradient (%)
45 45 45

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

180 180 180
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

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

Habitat and Range

Vernally moist rocky bluffs and meadows in the lowland zone; infrequent on SE Vancouver Island, the Gulf Islands and the adjacent mainland (Powell River); S to CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Allium attenuifolium Kellogg
Allium monospermum Jeps.
Allium occidentale A. Gray