Heuchera abramsii |
Heuchera merriamii |
|
---|---|---|
Abrams' alumroot, San Gabriel alum-root |
Canyon Creek alumroot, Merriam's alumroot |
|
Habit | Herbs subcaulescent; caudex branched. | Herbs acaulescent; caudex branched or unbranched. |
Flowering stems | 6–15 cm, short stipitate-glandular. |
11–32 cm, long stipitate-glandular or glabrate. |
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. |
petiole (2.4–5 cm), moderately long stipitate-glandular; blade orbiculate, reniform, or pentagonal, shallowly 5–7-lobed, 2.5–4.5 cm, base shallowly cordate to truncate, lobes rounded, margins dentate, apex rounded to obtuse, surfaces finely long stipitate-glandular abaxially, sparsely long stipitate-glandular adaxially. |
Inflorescences | dense. |
dense; (bracts linear and scarious to 3–5-parted and herbaceous). |
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. |
hypanthium radially symmetric, free 0.5–1.5 mm, pink, hemispheric, 3–5.5 mm, (base rounded), densely long stipitate-glandular; sepals erect, green- or red-tipped, equal, 1–2 mm (often wider than long), apex obtuse; petals erect, white, oblanceolate, (clawed), unlobed, 2–3.5 mm, margins entire; stamens exserted 0.8–2 mm; styles exserted 1–2 mm, 1.5–2.5 mm, 0.1+ mm diam. |
Capsules | ovoid, 3.5–5 mm, beaks divergent, not papillose. |
ovoid, 3–5 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.6 mm. |
dark brown, ellipsoid, 0.6 mm. |
2n | = 14. |
|
Heuchera abramsii |
Heuchera merriamii |
|
Phenology | Flowering Jul–Aug. | Flowering Jul–Aug. |
Habitat | Rocky soil in red fir forest | Exposed granite ledges in subalpine forests |
Elevation | 2800-3100 m (9200-10200 ft) | 1500-2500 m (4900-8200 ft) |
Distribution |
CA |
CA; OR
|
Discussion | 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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Heuchera merriamii is known from the Siskiyou and Trinity mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 99. | FNA vol. 8, p. 93. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 109. 1905 , | Eastwood: Bull. Torrey Bot. Club 32: 199. 1905 (as merriami), |
Web links |