Heuchera micrantha var. micrantha

Treatment appears in FNA Volume 8. Treatment on page 91.
Revision as of 23:01, 16 December 2019 by FNA>Volume Importer

Leaves: petiole glabrous or long stipitate-glandular; blade orbiculate to pentagonal, shallowly lobed. Inflorescences glabrous or sparsely short to medium stipitate-glandular. Flowers: hypanthium obconic, 1.4–4.5 × 1–3.7 mm, short to long stipitate-glandular; sepals 0.6–1.2 mm, apex rounded to acute; petals 0.2–0.7 mm wide; styles 1.6–3.1 mm. 2n = 28.


Phenology: Flowering May–Jun.
Habitat: Evergreen coniferous forests on basalt, schistose shale, metavolcanic, ultra basic, or serpentine-derived soils
Elevation: 10-1900 m

Distribution

V8 172-distribution-map.gif

Calif., Idaho, Oreg., Wash.

Discussion

Variety micrantha occurs in the Coast Range, Cascade Range, Blue and Klamath mountains, northern Sierra Nevada, and the Columbia River gorge, and on wooded banks of the Columbia and its tributaries.

Selected References

None.

Lower Taxa

None.
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
Douglas ex Lindley +
Calif. +, Idaho +, Oreg. +  and Wash. +
10-1900 m +
Evergreen coniferous forests on basalt, schistose shale, metavolcanic, ultra basic, or serpentine-derived soils +
Flowering May–Jun. +
Edwards’s Bot. Reg. +
Heuchera micrantha var. micrantha +
Heuchera micrantha +
variety +