Eriogonum heracleoides var. leucophaeum

Reveal

Phytologia 25: 200. 1973.

Common names: Bractless parsnip-flower wild buckwheat
Synonyms: Eriogonum caespitosum subsp. ramosum (Piper) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 355. Mentioned on page 354.
Revision as of 17:40, 18 September 2019 by FNA>Volume Importer

Aerial flowering stems 1–1.5(–2) dm, bractless or with 1 leaflike bract ca. midlength. Leaf blades usually linear-oblanceolate, 1.5–3 × 0.2–0.5 cm, densely lanate to tomentose on both surfaces. Involucres usually campanulate; tubes 3–4.5 mm; teeth 2.5–3.5 mm. Flowers (5–)6–9 mm; perianth cream or ochroleucous.


Phenology: Flowering May–Jul.
Habitat: Sandy to gravelly flats and slopes, mixed grassland and sagebrush communities
Elevation: 200-1400(-1900) m

Discussion

Variety leucophaeum comprises a series of populations scattered in eastern Washington (Adams, Chelan, Douglas, Kittitas, Lincoln, Okanogan, Spokane, Stevens, and Whitman counties) and adjacent Idaho (Gooding and Kootenai counties); a few outlying ones in Elmore and Valley counties are questionably assigned to this taxon.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
Reveal +
Bractless parsnip-flower wild buckwheat +
Idaho +  and Wash. +
200-1400(-1900) m +
Sandy to gravelly flats and slopes, mixed grassland and sagebrush communities +
Flowering May–Jul. +
Illustrated +  and Endemic +
Eriogonum caespitosum subsp. ramosum +
Eriogonum heracleoides var. leucophaeum +
Eriogonum heracleoides +
variety +