Flora of North America species comparison

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Erythronium propullans

Erythronium rostratum

Minnesota dwarf trout-lily, Minnesota fawnlily, Minnesota trout lily

beak trout-lily, yellow fawnlily, yellow troutlily
Bulbs

ovoid, 10–25 mm;

stolon 1 in flowering plants, arising from halfway up stem, 1–3 from bulbs of 1-leaved, nonflowering plants.

ovoid, 10–20 mm;

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

4–13 cm;

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

5–18 cm;

blade green, irregularly mottled, elliptic-lanceolate to ovate or elliptic, ± flat, not glaucous, margins entire.
Scape

3.9–12 cm.

3–10 cm.
Inflorescences

1-flowered.

1-flowered.
Flowers

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.

held erect at anthesis;

tepals yellow, tinged red-purple or orange abaxially, mostly spreading at anthesis, lanceolate, 20–34 mm, inner with conspicuous, well-developed auricles almost encircling opposing filaments;

stamens 13–17 mm;

filaments yellow, lanceolate;

anthers yellow;

pollen yellow;

style persistent, greenish yellow, swollen distally into stigma, tapering gradually proximally to ovary, forming beak on capsule, 8–11 mm;

stigma lobes erect, short, 1 mm.
Capsules

very rarely produced; when present, may be result of hybridization with Erythronium albidum.

held erect at maturity on upward-curving peduncle, ellipsoid to ellipsoid-obovoid, 15–25 mm (excluding beak), apex long-beaked.
2n

= 24.

Erythronium propullans

Erythronium rostratum
Phenology Flowering spring. Flowering spring.
Habitat Mesic floodplain woods Mesic woods, often in flood plains and along waterways, also on shaded lower ledges of bluffs
Elevation 300 m (1000 ft) 0–500 m (0–1600 ft)
Distribution
from FNA
MN
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; KS; KY; LA; MO; MS; OH; OK; TN; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Erythronium rostratum is found mostly on either side of the Mississippi River embayment, but rarely within it. It often forms extensive colonies where nonflowering, 1-leaved plants far outnumber flowering ones. This is the only species of Erythronium with erect rather than nodding flowers. Some plants at the western limits of the range are triploids (B. L. Carr 1986).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 164. FNA vol. 26, p. 162.
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. 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. mesochoreum, E. montanum, E. multiscapideum, E. oregonum, E. pluriflorum, E. propullans, E. purpurascens, E. pusaterii, E. quinaultense, E. revolutum, E. taylorii, E. tuolumnense, E. umbilicatum
Name authority A. Gray: Amer. Naturalist 5: 300, fig. 74. (1871) W. Wolf: Castanea 6: 24, plate 1. (1941)
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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