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FNA | Family List | FNA Vol. 8 | Saxifragaceae | Heuchera

17. Heuchera abramsii Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 109. 1905.

San Gabriel alum-root San Gabriel alum-root

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.

Flowering Jul-Aug. Rocky soil in red fir forest; 2800-3100 m; Calif.

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.


 

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