UW Burke Herbarium species comparison

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Erythronium montanum

Erythronium oregonum
Erythronium montanum

avalanche-lily, white avalanche-lily

deer's tongue, giant fawn-lily, wild easter lily
Habit Herbaceous, scapose perennial from a deep-seated corm, the scape 1.5-2.5 dm. tall. Perennial herb from a deep corm; flowering stems to 30 cm tall.
Leaves

Leaves 2, basal, not mottled, oblong-lanceolate, 10-20 cm. long, rounded to petioles 2-7 cm. long.

All basal, usually paired; lanceolate; strongly mottled with brown.
Flowers

Flowers 1-3, nodding;

tepals 6, distinct, lanceolate, white with a yellow base, 3-5 cm. long, reflexed;

filaments 6, white, linear;

anthers yellow;

style slender, stigma 2-4 mm. long.

Showy white blooms with 6 tepals to 5 cm long; 1-3 at stem tips.
Fruits

Capsule cylindric-obovoid, 1.5-3 cm. long.

Erect capsules 3-5 cm long.

Erythronium montanum

Erythronium oregonum
Identification notes The mottled leaves and low-elevation habitat separate this species from E. montanum, which also has white flowers; our other Erythronium species have pink or yellow flowers.
Flowering time June-August March-May
Habitat Forest openings and mountain meadows, subalpine to alpine. Prairies, rocky balds, moist woods; at low elevations.
Distribution
Occurring chiefly west of the Cascades crest in Washington; Coast Range and Vancouver Island in British Columbia to Oregon.
[WildflowerSearch map]
[BONAP county map]
Occurring west of the Cascades crest in the Puget Sound lowlands and east in the Columbia River Gorge in Washington; British Columbia to California.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Not of concern
Sibling taxa
E. grandiflorum, E. idahoense, E. oregonum, E. quinaultense, E. revolutum
E. grandiflorum, E. idahoense, E. montanum, E. quinaultense, E. revolutum
Subordinate taxa
E. oregonum ssp. oregonum
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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