Flora of North America species comparison

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Erythronium oregonum

deer's tongue, giant fawn-lily, giant white fawn-lily, Oregon fawn-lily, white fawn lily, wild Easter lily
Bulbs

narrowly ovoid, 25–60 mm, sometimes producing sessile offsets.
Leaves

12–25 cm;

blade distinctly mottled with irregular streaks of brown or white, ovate to broadly lanceolate, margins wavy.
Scape

± reddish, 15–40 cm.
Inflorescences

1–3-flowered.
Flowers

tepals white to creamy white with yellow base at anthesis, sometimes pinkish in age, sometimes with red lines or bands, elliptic to narrowly ovate, 25–40 mm, inner with small auricles at base;

stamens 12–25 mm;

filaments white, flattened, ± lanceolate, 2–3 mm wide;

anthers cream to yellow;

style white, 12–18 mm;

stigma with recurved lobes 3–6 mm.
Capsules

oblong to narrowly obovoid, 3–5 cm.
2n

= 24.

Erythronium oregonum
Phenology Flowering spring (Mar–May).
Habitat Open coniferous forests, rocky outcrops, oak woodlands, meadows
Elevation 0–500 m (0–1600 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

Forms from the southern part of the range with cream-white tepals and pale anthers have been described as subsp. leucandrum. This species is closely related to E. revolutum and occasionally hybridizes with it where their ranges meet. In addition, E. citrinum and E. hendersonii are reported to hybridize with E. oregonum in the southern part of its range.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 158.
Parent taxa 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. montanum, E. multiscapideum, E. pluriflorum, E. propullans, E. purpurascens, E. pusaterii, E. quinaultense, E. revolutum, E. rostratum, E. taylorii, E. tuolumnense, E. umbilicatum
Synonyms E. giganteum subsp. leucandrum, E. oregonum subsp. leucandrum
Name authority Applegate: Madroño 3: 99. (1935)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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