OregonFlora: Erythronium idahoense vs. Erythronium

	Erythronium idahoense	Erythronium
		fawn-lily, trout-lily
Habit		Herbs perennial, scape-like; from elongate bulbs, rhizomes present.
Leaves		2(3), or 1 in non-flowering plants; basal, with short petioles; blades lanceolate to elliptic, 5–25 cm, mottled or not, glabrous; margins entire or wavy.
Scapes		5–35 cm long.
Inflorescences		peduncled racemes, 1–10-flowered.
Flowers		usually nodding; tepals 6, recurved; distinct, similar, often strongly recurved, lanceolate to ovate, white, yellow, pink, or purple, often different colored at base; stamens 6; ovary superior; style 1; stigma entire or 3-lobed, recurved when lobed.
Fruits		capsules; ovoid to oblong, 3-sided; dehiscence loculicidal.
Seeds		ovoid, brown.

	Erythronium idahoense	Erythronium
Distribution		[BONAP county map]
Discussion		Northern Hemisphere. 27 species; 8 species treated in Flora. A small population of E. multiscapideum was discovered in Jackson County in 2010. The collector (Frank Callahan), however, notes that the number of plants was not abundant and that the population was suffering from browsing deer. Whether this species is currently present in Oregon is unknown at this time.
Source		Flora of Oregon, volume 1, page 298 Stephen Meyers
Sibling taxa	E. citrinum, E. elegans, E. grandiflorum, E. hendersonii, E. hendersonii x Erythronium oregonum, E. klamathense, E. montanum, E. multiscapideum, E. oregonum, E. revolutum
Subordinate taxa		E. citrinum, E. elegans, E. grandiflorum, E. hendersonii, E. klamathense, E. montanum, E. multiscapideum, E. oregonum, E. revolutum
Web links	Local floras: WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Erythronium idahoense

Erythronium

fawn-lily, trout-lily

Habit

Herbs perennial, scape-like; from elongate bulbs, rhizomes present.

Leaves

2(3), or 1 in non-flowering plants;

basal, with short petioles;

blades lanceolate to elliptic, 5–25 cm, mottled or not, glabrous;

margins entire or wavy.

Scapes

5–35 cm long.

Inflorescences

peduncled racemes, 1–10-flowered.

Flowers

usually nodding;

tepals 6, recurved; distinct, similar, often strongly recurved, lanceolate to ovate, white, yellow, pink, or purple, often different colored at base;

stamens 6;

ovary superior;

style 1;

stigma entire or 3-lobed, recurved when lobed.

Fruits

capsules; ovoid to oblong, 3-sided; dehiscence loculicidal.

Seeds

ovoid, brown.

Erythronium idahoense

Erythronium

Distribution

[BONAP county map]

Discussion

Northern Hemisphere. 27 species; 8 species treated in Flora.

A small population of E. multiscapideum was discovered in Jackson County in 2010. The collector (Frank Callahan), however, notes that the number of plants was not abundant and that the population was suffering from browsing deer. Whether this species is currently present in Oregon is unknown at this time.

Source

Flora of Oregon, volume 1, page 298
Stephen Meyers

Sibling taxa