Erythronium propullans
Erythronium mesochoreum
Minnesota dwarf trout-lily, Minnesota fawnlily, Minnesota trout lily
midland fawnlily, prairie trout-lily, white fawnlily
ovoid, 10–25 mm;
stolon 1 in flowering plants, arising from halfway up stem, 1–3 from bulbs of 1-leaved, nonflowering plants.
ovoid to ± globose, 10–25 mm;
stolons absent; flowering plants reproducing vegetatively by droppers or offshoots.
4–13 cm;
blade green, irregularly mottled, elliptic-lanceolate to ovate-lanceolate or elliptic, ± flat, glaucous, margins entire.
5–14 cm;
blade green, usually not mottled, elliptic-lanceolate to ovate-lanceolate, conduplicate, glaucous, base and margins sometimes purple-brown, margins even.
3.9–12 cm.
5–15 cm.
1-flowered.
1-flowered.
tepals 4–6, strongly reflexed at anthesis, pale pink to white, darker abaxially, lanceolate, 8–15 mm, auricles absent;
stamens 2–6, 6–8 mm;
filaments white, lanceolate;
anthers yellow;
pollen yellow;
style white, 6–10 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.
very rarely produced; when present, may be result of hybridization with Erythronium albidum.
resting on ground at maturity due to reclining peduncle, obovoid, 10–15 mm, apex rounded to faintly apiculate or umbilicate.
= 22.
Erythronium propullans
Erythronium mesochoreum
Of conservation concern.
Erythronium propullans is known only from Goodhue and Rice counties. It often forms extensive colonies in which flowering plants are sometimes more abundant than nonflowering, 1-leaved ones, and sometimes the reverse. It grows mixed with E. albidum (J. A. Banks 1980), and putative hybrids between them have been reported (T. Morley 1988). Flowers frequently have fewer than six tepals and stamens (C. O. Rosendahl 1919), and may occasionally have only two carpels.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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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