Eriogonum flavum var. aquilinum

Reveal

Ark. Bot., n. s. 7: 46. 1968.

Common names: Yukon wild buckwheat
Treatment appears in FNA Volume 5. Treatment on page 372. Mentioned on page 371.
Revision as of 20:10, 24 September 2019 by FNA>Volume Importer

Plants tight, compact mats, 3–10 dm wide. Aerial flowering stems mostly erect, 0.2–0.8 dm. Leaf blades narrowly elliptic, 1–2(–3.5) × 0.4–1 cm, densely tomentose abaxially, floccose and greenish adaxially. Inflorescences umbellate; branches 0.5–2 cm. Involucres usually turbinate-campanulate, (4–)5–7(–8) mm. Flowers 3–5(–6) mm, including 0.2–0.3 mm stipelike base; perianth bright yellow.


Phenology: Flowering Jul–Aug.
Habitat: Exposed bluffs, mixed grassland communities, willow thickets
Elevation: 300-500 m

Discussion

Variety aquilinum is rare and isolated, known only from the Eagle area of extreme east-central Alaska (including the Kathul Mountains, Southeast Fairbanks County) and from the Aishihik Lake area in the Yukon Territory. It is closely related to and marginally distinct from var. flavum, its isolation the result of Pleistocene glaciation.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
Reveal +
Yukon wild buckwheat +
Yukon +  and Alaska. +
300-500 m +
Exposed bluffs, mixed grassland communities, willow thickets +
Flowering Jul–Aug. +
Ark. Bot., n. s. +
Illustrated +  and Endemic +
Eriogonum flavum var. polyphyllum +  and Eriogonum polyphyllum +
Eriogonum flavum var. aquilinum +
Eriogonum flavum +
variety +