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Erythronium klamathense

Klamath fawn-lily

midland fawnlily, prairie trout-lily, white fawnlily

Bulbs

slender, 25–40 mm.

ovoid to ± globose, 10–25 mm;

stolons absent; flowering plants reproducing vegetatively by droppers or offshoots.

Leaves

6–17 cm;

blade green, lanceolate to narrowly elliptic, ± folded along midvein, 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

6–20 cm.

5–15 cm.

Inflorescences

1–3-flowered.

1-flowered.

Flowers

tepals 2/3 or more white, with yellow zone at base, ± pinkish in age, broadly lanceolate, 20–35 mm, inner with small auricles at base;

stamens 8–14 mm;

filaments white, slender;

anthers ± yellow;

style white, 4–9 mm;

stigma ± unlobed.

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

narrowly obovoid, 2–5 cm.

resting on ground at maturity due to reclining peduncle, obovoid, 10–15 mm, apex rounded to faintly apiculate or umbilicate.

2n

= 24.

= 22.

Erythronium klamathense

Erythronium mesochoreum

Phenology Flowering late spring to summer (Apr–Jun). Flowering spring.
Habitat Montane meadows, openings in coniferous forests Prairies, glades, dry, open woods, occasionally pastures
Elevation 1200–1900 m (3900–6200 ft) 100–700 m (300–2300 ft)
Distribution
from FNA
CA; OR
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[BONAP county map]
from FNA
AR; IA; IL; KS; MO; NE; OK; TX
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[BONAP county map]
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.)

Source FNA vol. 26, p. 158. FNA vol. 26, p. 163.
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. 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
E. albidum, E. americanum, E. californicum, E. citrinum, E. elegans, E. grandiflorum, E. helenae, E. hendersonii, E. klamathense, 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. albidum var. coloratum, E. albidum var. mesochoreum
Name authority Applegate: Contr. Dudley Herb. 1: 151. (1930) Knerr: Midland College Monthly 2: 5. (1891)
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