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bare-stem buckwheat, naked buckwheat
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rock buckwheat, round-headed eriogonum
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| Perennial with a few sparingly-branched, green, leafless stems to 5 dm. tall. |
Spreading to erect sub-shrub, freely branched, forming a dense, rounded clump to 4 dm. tall. |
All basal, the blades oblong to oval, dense gray-woolly beneath and green above with some soft, fine hairs, narrowed abruptly to a slender petiole 2-4 times as long as the blade. |
Numerous in whorls at the branch tips, broadly linear, 1-3 cm. long by 3-6 mm. wide, somewhat grayish-woolly on the underside and less so on the top |
Open, branched inflorescence with leafy bracts at the first and second points of branching; involucres usually in capitate clusters, tubular, with 5 erect, short teeth; flowers interspersed with numerous, filiform bracts that protrude form the involucres. Tepals white to pinkish or yellowish, 3-4 mm. long, divided nearly to the base into oblong segments. |
Flowering stems 5-10 cm. tall, terminating in an umbel of two or more pedicels, which are subtended by several leafy bracts; the involucres are cup-shaped, with 6-10 oblong lobes about 3 mm. long, about equaling the tube, reflexed to spreading; the tepals are usually yellow, but occasionally white or pinkish, 6-8 mm. long with a stipe-like base, and forming a ball-like flower cluster. |
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| Separate from E. elatum by the leaves and flower clusters. E. elatum has large leaves somewhat triangular in shape and green on both surfaces, and it has only a few flowers in each cluster. |
The dense, rounded clump of fine branches covered with bright yellow spheres of flowers should identify this species. |
| June-August |
May-July |
| Sandy or rocky places from the lowlands to subalpine. |
Sagebrush or juniper flats to ponderosa pine forests at low elevations. |
Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California and Nevada.
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Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
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| Native |
Native |
| Not of concern |
Not of concern |
E. baileyi, E. cernuum, E. codium, E. compositum, E. douglasii, E. elatum, E. flavum, E. heracleoides, E. maculatum, E. marifolium, E. microtheca, E. niveum, 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. maculatum, E. marifolium, E. microtheca, E. niveum, E. nudum, E. ovalifolium, E. pyrolifolium, E. strictum, E. thymoides, E. umbellatum, E. vimineum |
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CA
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
