UW Burke Herbarium species comparison

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Eriogonum flavum

Eriogonum maculatum

yellow buckwheat

spotted buckwheat
Habit Tufted perennial with several woody branches coming from a stout taproot and covered with dead leaves, and several simple stems to 2 dm. tall top with a compact, multi-rayed umbel and ball-shaped flower clusters.
Leaves

Basal, closely crowded, usually more or less gray-woolly, especially below, linear to narrowly oblanceolate, 3-7 cm. long with a petiole about the same length.

Flowers

Flowering stems leafless, 5-20 cm. long; inflorescence a simple umbel, rays up to 3 cm. long, subtended by 4-6 somewhat leafy bracts;

involucre covered with soft hairs, cone-shaped, 4-7 mm. long with 4-5 shallow lobes;

tepals 4-6 mm. long, usually pale to deep yellow but sometimes rose-tinged, covered with soft, silky hairs, and with a short, stipitate base.

Eriogonum flavum

Eriogonum maculatum
Flowering time June-August May-June
Habitat Open knolls in grasslands to alpine ridges and scree. Sand, gravel or clay slopes and flats, grassland, and shrub-steppe.
Distribution
Occurring east of the Cascades crest in southeastern Washington; Alaska to northeastern Oregon, east to the northern Great Plains.
[WildflowerSearch map]
[BONAP county map]
Collected once (1884) in Yakima County in Washington and now considered extirpated; southeastern Oregon to southwestern Idaho, south to Baja California, Mexioca and east to New Mexico.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Presumed extirpated in Washington (WANHP)
Sibling taxa
E. baileyi, E. cernuum, E. codium, E. compositum, E. douglasii, E. elatum, E. heracleoides, E. maculatum, E. marifolium, E. microtheca, E. niveum, E. nudum, E. ovalifolium, E. pyrolifolium, E. sphaerocephalum, E. strictum, E. thymoides, E. umbellatum, E. vimineum
E. baileyi, E. cernuum, E. codium, E. compositum, E. douglasii, E. elatum, E. flavum, E. heracleoides, E. marifolium, E. microtheca, E. niveum, E. nudum, E. ovalifolium, E. pyrolifolium, E. sphaerocephalum, E. strictum, E. thymoides, E. umbellatum, E. vimineum
Subordinate taxa
E. flavum var. piperi
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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