Heuchera abramsii


in N. L. Britton et al., N. Amer. Fl. 22: 109. 1905 ,.

Common names: San Gabriel alum-root
Treatment appears in FNA Volume 8. Treatment on page 99. Mentioned on page 87, 100.

Herbs subcaulescent; caudex branched. Flowering stems 6–15 cm, short stipitate-glandular. Leaves: petiole glabrous or short stipitate-glandular and scattered medium stipitate-glandular; blade ovate, deeply 5-lobed, 0.5–2 cm, base truncate or shallowly cordate, lobes rounded, margins dentate, apex obtuse, surfaces short stipitate-glandular abaxially, sparsely long stipitate-glandular adaxially. Inflorescences dense. Flowers: hypanthium strongly bilaterally symmetric, free 1.5–2 mm on adaxial side, reddish purple, cylindric, 4–5 mm, short stipitate-glandular proximally, medium stipitate-glandular distally; sepals spreading, green-tipped, unequal, 1.2–1.5 mm, apex obtuse or rounded; petals spreading, white, spatulate or oblanceolate, rarely linear, unlobed, 1.5–2.5 mm (equaling or longer than sepals), margins entire; stamens barely included to 1.5 mm exserted; styles exserted 1.5–2 mm, 2.5–3 mm, 0.1+ mm diam. Capsules ovoid, 3.5–5 mm, beaks divergent, not papillose. Seeds dark brown, ellipsoid, 0.6 mm.

Phenology: Flowering Jul–Aug.
Habitat: Rocky soil in red fir forest
Elevation: 2800-3100 m


Heuchera abramsii occurs in the San Antonio Mountains and the eastern part of the San Gabriel Mountains, San Bernardino and Los Angeles counties. It closely resembles H. brevistaminea, H. caespitosa, H. elegans, and H. pulchella.

Selected References


Lower Taxa