Erythronium revolutum |
Erythronium mesochoreum |
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coast fawn lily, mahogany fawn lily, pink fawn-lily |
midland fawnlily, prairie trout-lily, white fawnlily |
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Bulbs | narrowly ovoid, 35–50 mm, sometimes producing sessile offsets. |
ovoid to ± globose, 10–25 mm; stolons absent; flowering plants reproducing vegetatively by droppers or offshoots. |
Leaves | 10–25 mm; blade distinctly mottled with irregular streaks of brown or white, broadly lanceolate to ovate, margins entire to ± wavy. |
5–14 cm; blade green, usually not mottled, elliptic-lanceolate to ovate-lanceolate, conduplicate, glaucous, base and margins sometimes purple-brown, margins even. |
Scape | 15–40 cm. |
5–15 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 spreading at anthesis, white, tinged pink, blue, or lavender abaxially, with yellow adaxial spot at base, lanceolate, 15–30 mm, auricles absent; stamens 8–15 mm; filaments yellow, lanceolate; anthers yellow; pollen yellow; style white, 7–10 mm; stigma lobes recurving, 1–1.5 mm. |
Capsules | oblong to obovoid, 3–6 cm. |
resting on ground at maturity due to reclining peduncle, obovoid, 10–15 mm, apex rounded to faintly apiculate or umbilicate. |
2n | = 22. |
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Erythronium revolutum |
Erythronium mesochoreum |
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Phenology | Flowering early spring (Mar–Apr). | Flowering spring. |
Habitat | Shaded stream banks, river terraces, wet places in forests | Prairies, glades, dry, open woods, occasionally pastures |
Elevation | 0–600(–1000) m (0–2000(–3300) ft) | 100–700 m (300–2300 ft) |
Distribution |
CA; OR; WA; BC; generally within 100 km of Pacific Coast
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AR; IA; IL; KS; MO; NE; OK; TX
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Discussion | Because stolons are absent in Erythronium mesochoreum, most plants in a population produce flowers; nonflowering plants may sometimes appear after flowering plants have flowered. This species is well adapted to prairie fires. The seeds have elaiosomes, and ants may act as dispersal agents (Great Plains Flora Association 1986). C. C. Deam et al. (1941) reported E. mesochoreum from Indiana, but an examination of the specimens cited, now at IND, showed that these are E. albidum. E. L. Braun (1967) reported that many populations of E. albidum in southwestern Ohio indicate introgression with “the Ozarkean var. mesochoreum.” However, personal observation by K. R. Robertson of several Ohio populations in flower confirmed that these plants are true E. albidum, although they occur in prairies and have more or less conduplicate leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 26, p. 158. | FNA vol. 26, p. 163. |
Parent taxa | Liliaceae > Erythronium | Liliaceae > Erythronium |
Sibling taxa | ||
Synonyms | E. albidum var. coloratum, E. albidum var. mesochoreum | |
Name authority | Smith: in A. Rees, Cycl. 13: Erythronium no. 3. (1809) | Knerr: Midland College Monthly 2: 5. (1891) |
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