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Erythronium montanum

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

Erythronium citrinum

citrus fawn lily, cream fawn lily, lemon color fawn lily, lemon fawn lily, pale fawn-lily

Bulbs

narrowly ovoid, 25–60 mm.

slender, 40–50 mm, sometimes producing sessile offsets.

Leaves

10–20 cm;

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

9–15 cm;

blade mottled with irregular streaks of brown or white, lanceolate to narrowly ovate, margins ± wavy.

Scape

12–35 cm.

12–35 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.

tepals ± white, often pinkish, usually pale yellow at base, lanceolate to narrowly elliptic, 25–45 mm, inner with or without small auricles at base;

stamens 11–17 mm;

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

anthers white, cream, pink, reddish, or brownish red;

style straight, white or pink, 6–10 mm;

stigma unlobed or with lobes shorter than 1 mm.

Capsules

oblong, 3–6 cm.

obovoid, 2–5 cm.

2n

= 24.

= 24.

Erythronium montanum

Erythronium citrinum

Phenology Flowering summer, usually soon after snowmelt (Jun–Aug). Flowering spring (Mar–May).
Habitat Montane and subalpine meadows, open coniferous forests Dry woods, brushy slopes, common on serpentine substrates
Elevation (300–)800–2000 m ((1000–)2600–6600 ft) 100–1300 (–1800) m (300–4300 (–5900) ft)
Distribution
from FNA
OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[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.)

Plants lacking auricles on inner tepals are sometimes segregated as Erythronium howellii, Howell’s fawn-lily, but they do not appear to differ from typical E. citrinum in any other characters. Erythronium citrinum intergrades with E. californicum and E. hendersonii, occasional populations or individuals displaying intermediate or recombined characteristics. Such plants from the upper Scott River drainage in Trinity County, California, which may be the result of introgression with E. hendersonii, have been recognized as variety roderickii.

(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. californicum, 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
Synonyms E. citrinum var. roderickii, E. howellii
Name authority S. Watson: Proc. Amer. Acad. Arts 26: 130. (1891) S. Watson: Proc. Amer. Acad. Arts 22: 480. (1887)
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