Eriogonum microtheca var. johnstonii

Reveal

Sci. Bull. Brigham Young Univ., Biol. Ser. 13(1): 28, fig. 15. 1971.

Common names: Johnston’s wild buckwheat
EndemicConservation concern
Treatment appears in FNA Volume 5. Treatment on page 245. Mentioned on page 243.
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Subshrubs, 0.6–1.3 × 2–5 dm. Stems: caudex spreading; aerial flowering stems 0.3–0.6 dm, floccose to subglabrous. Leaves: blade elliptic to ovate, 0.5–1 × (0.2–)0.3–0.5(–0.6) cm, densely whitish-brown-tomentose abaxially, floccose to subglabrous adaxially, margins not revolute. Inflorescences 0.5–3 cm; branches floccose to subglabrous. Involucres (2–)2.5–3 mm, usually glabrous. Flowers (2.5–)3–3.5(–4) mm; perianth white to reddish. Achenes 2.5–3 mm.


Phenology: Flowering Jul–Sep.
Habitat: Granitic slopes, montane conifer woodlands
Elevation: 2600-2900 m

Discussion

Variety johnstonii is rare and known only from the upper reaches of the San Gabriel Mountains near the San Bernardino–Los Angeles county line.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
Reveal +
Undefined subg. Eucycla +
Johnston’s wild buckwheat +
2600-2900 m +
Granitic slopes, montane conifer woodlands +
Flowering Jul–Sep. +
Sci. Bull. Brigham Young Univ., Biol. Ser. +
Endemic +  and Conservation concern +
Eriogonum microtheca var. johnstonii +
Eriogonum microtheca +
variety +