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Erythronium montanum

avalanche-lily, white avalanche-lily, white glacier lily

California fawn-lily

Bulbs

narrowly ovoid, 25–60 mm.

ovoid, 35–60 mm, sometimes producing sessile offsets.

Leaves

10–20 cm;

blade green, ovate to broadly lanceolate, base ± abruptly narrowed to petiole, margins wavy.

7–18 cm;

blade distinctly mottled with irregular streaks of brown or white, oblong to narrowly ovate, margins usually wavy.

Scape

12–35 cm.

± reddish, branched well above leaves when flowers more than 1, 10–30 cm.

Inflorescences

1–3-flowered.

1–3-flowered.

Flowers

tepals white to creamy white with bright yellow zone at base, broadly ovate to broadly lanceolate, 25–45 mm, inner wider than outer, auriculate at base, length less than 4 times width;

stamens 12–24 mm;

filaments white, linear, slender, less than 0.8 mm wide;

anthers bright yellow;

style white, 13–25 mm;

stigma with slender, usually recurved lobes 1–5 mm.

flowering individuals generally abundant in populations;

tepals white to cream, base yellow and often banded with brown or red, ± narrowly ovate, 25–40 mm, inner with small auricles at base;

stamens 12–25 mm;

filaments ± white, linear, slender, less than 0.8 mm wide;

anthers white to cream;

style ± white, 10–14 mm;

stigma unlobed or with lobes less than 2 mm.

Capsules

oblong, 3–6 cm.

obovoid, 3–6 cm.

2n

= 24.

= 24.

Erythronium montanum

Erythronium californicum

Phenology Flowering summer, usually soon after snowmelt (Jun–Aug). Flowering spring (Mar–Apr).
Habitat Montane and subalpine meadows, open coniferous forests Dry woods, openings, cliffs
Elevation (300–)800–2000 m ((1000–)2600–6600 ft) 0–1900 m (0–6200 ft)
Distribution
from FNA
OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

This species occurs in the Coast Ranges of southern British Columbia, and disjunctly to southern Vancouver Island, the Olympic Peninsula, and Cascade Mountains from Mount Rainier National Park in Washington to central Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Forms intermediate with Erythronium citrinum and E. multiscapideum are sometimes seen where ranges overlap.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 157. FNA vol. 26, p. 160.
Parent taxa Liliaceae > Erythronium Liliaceae > Erythronium
Sibling taxa
E. albidum, E. americanum, E. californicum, E. citrinum, E. elegans, E. grandiflorum, E. helenae, E. hendersonii, E. klamathense, E. mesochoreum, E. multiscapideum, E. oregonum, E. pluriflorum, E. propullans, E. purpurascens, E. pusaterii, E. quinaultense, E. revolutum, E. rostratum, E. taylorii, E. tuolumnense, E. umbilicatum
E. albidum, E. americanum, E. citrinum, E. elegans, E. grandiflorum, E. helenae, E. hendersonii, E. klamathense, E. mesochoreum, E. montanum, E. multiscapideum, E. oregonum, E. pluriflorum, E. propullans, E. purpurascens, E. pusaterii, E. quinaultense, E. revolutum, E. rostratum, E. taylorii, E. tuolumnense, E. umbilicatum
Name authority S. Watson: Proc. Amer. Acad. Arts 26: 130. (1891) Purdy: Fl. & Sylva 2: 253. (1904)
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