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Erythronium revolutum

coast fawn lily, mahogany fawn lily, pink fawn-lily

American trout-lily, dogtooth violet, trout lily, yellow trout-lily, érythrone d'amérique

Bulbs

narrowly ovoid, 35–50 mm, sometimes producing sessile offsets.

ovoid, 15–28 mm;

stolons 1–3, common, mostly on 1-leaved, nonflowering plants.

Leaves

10–25 mm;

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

8–23 cm;

blade green, irregularly mottled, elliptic-lanceolate to ovate or elliptic, ± flat, glaucous, margins entire.

Scape

15–40 cm.

10–18 cm.

Inflorescences

1–3-flowered.

1-flowered.

Flowers

tepals uniformly clear violet-pink at anthesis, with yellow banding at base, lanceolate to narrowly elliptic, 25–40 mm, inner with small auricles at base;

stamens ± appressed to style, 12–22 mm;

filaments white to pink (darkening with age), flattened, ± lanceolate, 2–3 mm wide;

anthers bright yellow;

style white to pink, 12–18 mm;

stigma with slender recurved lobes 4–6 mm.

tepals yellow, sometimes tinged light to dark purple-red abaxially, sometimes with reddish dots adaxially, strongly reflexed at anthesis, lanceolate, 20–33 mm, inner with small auricles;

stamens 9–15 mm;

filaments yellow, lanceolate;

anthers yellow, chestnut brown, or lavender;

pollen yellow or brown;

style deciduous or base forming small apiculum, greenish yellow, 5–11 mm, swollen distally or ± terete;

stigma lobes erect or recurved, 1.5 mm.

Capsules

oblong to obovoid, 3–6 cm.

held erect or at least off ground at maturity, obovoid, 12–15 mm, apex rounded, truncate, or apiculate.

2n

= 48.

Erythronium revolutum

Erythronium americanum

Phenology Flowering early spring (Mar–Apr).
Habitat Shaded stream banks, river terraces, wet places in forests
Elevation 0–600(–1000) m (0–2000(–3300) ft)
Distribution
from FNA
CA; OR; WA; BC; generally within 100 km of Pacific Coast
[WildflowerSearch map]
[BONAP county map]
from USDA
e North America
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Erythronium americanum is a very common and widespread species, particularly in northeastern North America, becoming less frequent towards the southern and western limits of its range. Nonflowering plants far outnumber flowering ones in most populations because of their extensive stolon production. Plants with brown anthers have been called forma castaneum L. B. Smith.

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

Key
1. Capsule apex rounded, truncate, or short-apiculate; stigma lobes erect, not grooved; widespread in ne United States
subsp. americanum
1. Capsule apex distinctly apiculate; stigma lobes recurved, grooved distally; n Alabama, Georgia, ne Mississippi, Tennessee
subsp. harperi
Source FNA vol. 26, p. 158. FNA vol. 26, p. 161.
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. montanum, E. multiscapideum, E. oregonum, E. pluriflorum, E. propullans, E. purpurascens, E. pusaterii, E. quinaultense, E. rostratum, E. taylorii, E. tuolumnense, E. umbilicatum
E. albidum, E. californicum, 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
Subordinate taxa
E. americanum subsp. americanum, E. americanum subsp. harperi
Name authority Smith: in A. Rees, Cycl. 13: Erythronium no. 3. (1809) Ker Gawler: Bot. Mag. 28: plate 1113. (1808)
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