Burke: Allium fibrillum vs. Allium dictuon

	Allium fibrillum	Allium dictuon
	Cuddy Mountain onion, fringed onion	Blue Mountain onion
Habit	Scapose perennials from ovoid bulbs, usually clustered, the inner coats whitish or reddish, the outer coats grayish or brownish, with a thin inner membrane with distinct, elongate, contorted network pattern.	Scapose perennial from an obliquely ovoid bulb, with new bulbs developing outside the bulb coat; outer coat pale brown with a conspicuous, irregular, oblong or rhomboidal network pattern.
Leaves	Leaves 2, concave-convex, 1-3 mm. broad, entire, equal to or longer than the scape, persistent at maturity; scape 3-15 cm. tall, terete or slightly flattened.	Leaves 2, linear, nearly flat, much shorter that the terete scape.
Flowers	Umbel few- to many-flowered, the slender pedicels 1-2 times as long as the tepals; tepals 5-8 mm. long, lanceolate, obtuse to pointed, entire, white or pink with prominent greenish mid-rib; stamens 6, + the length of the tepals; anthers yellowish or purplish.	Umbel many-flowered, the pedicel 1-2 times as long as the tepals; tepals 6, 10-15 mm. long, bright pink, narrowly lanceolate, tapered and pointed, denticulate; stamens 6, about 2/3 the length of the tepals.
Fruits	Capsule 3-celled, obscurely crested with three low processes.	Capsule 3-celled, without a crest.

	Allium fibrillum	Allium dictuon
Flowering time	May-July	June-July
Habitat	Moist, shallow soils in the mountains.	Open, fairly dry, rocky areas at low to middle elevations.
Distribution	Occurring chiefly in the southeastern counties of Washington; Washington east to Montana, south to Oregon. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington, where endemic to Columbia County. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Threatened in Washington (WANHP)
Sibling taxa	A. acuminatum, A. amplectens, A. campanulatum, A. cernuum, A. columbianum, A. constrictum, A. crenulatum, A. dictuon, A. douglasii, A. geyeri, A. macrum, A. nevii, A. robinsonii, A. schoenoprasum, A. scilloides, A. textile, A. tolmiei, A. validum, A. vineale	A. acuminatum, A. amplectens, A. campanulatum, A. cernuum, A. columbianum, A. constrictum, A. crenulatum, A. douglasii, A. fibrillum, A. geyeri, A. macrum, A. nevii, A. robinsonii, A. schoenoprasum, A. scilloides, A. textile, A. tolmiei, A. validum, A. vineale
Web links	Local floras: OR, WA Local Web sites: 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	Local floras: OR, 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

Allium dictuon

Cuddy Mountain onion, fringed onion

Blue Mountain onion

Habit

Scapose perennials from ovoid bulbs, usually clustered, the inner coats whitish or reddish, the outer coats grayish or brownish, with a thin inner membrane with distinct, elongate, contorted network pattern.

Scapose perennial from an obliquely ovoid bulb, with new bulbs developing outside the bulb coat; outer coat pale brown with a conspicuous, irregular, oblong or rhomboidal network pattern.

Leaves

Leaves 2, concave-convex, 1-3 mm. broad, entire, equal to or longer than the scape, persistent at maturity;

scape 3-15 cm. tall, terete or slightly flattened.

Leaves 2, linear, nearly flat, much shorter that the terete scape.

Flowers

Umbel few- to many-flowered, the slender pedicels 1-2 times as long as the tepals;

tepals 5-8 mm. long, lanceolate, obtuse to pointed, entire, white or pink with prominent greenish mid-rib;

stamens 6, + the length of the tepals;

anthers yellowish or purplish.

Umbel many-flowered, the pedicel 1-2 times as long as the tepals;

tepals 6, 10-15 mm. long, bright pink, narrowly lanceolate, tapered and pointed, denticulate;

stamens 6, about 2/3 the length of the tepals.