Heuchera abramsii |
Heuchera maxima |
|
---|---|---|
Abrams' alumroot, San Gabriel alum-root |
island alumroot, jill-of-the-rocks |
|
Habit | Herbs subcaulescent; caudex branched. | Herbs caulescent; caudex branched. |
Flowering stems | 6–15 cm, short stipitate-glandular. |
9–30 cm, short or long stipitate-glandular, viscid. |
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 (7–22 cm), densely long stipitate-glandular; blade pentagonal to septagonal, deeply 5-lobed, 6.3–17 cm, base deeply cordate, lobes rounded, margins crenate, apex obtuse, surfaces long stipitate-glandular abaxially, glabrous adaxially except long stipitate-glandular near margins, viscid. |
Inflorescences | dense. |
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. |
hypanthium radially symmetric, free 0.3–1.4 mm, white to pink, hemispheric, 2.5–4.2 mm, densely long stipitate-glandular; sepals somewhat spreading, green- or red-tipped, equal, 0.7–2 mm, apex rounded or truncate, (medium to long stipitate-glandular); petals spreading, white, oblong-lanceolate, (clawed), unlobed, 2–4 mm, margins entire; stamens exserted 0.4–2.5 mm; styles exserted to 2 mm, 1.5–4 mm, 0.1+ mm diam. |
Capsules | ovoid, 3.5–5 mm, beaks divergent, not papillose. |
ovoid, 4–8 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.6 mm. |
black, broadly fusiform, 0.4 mm. |
2n | = 14. |
|
Heuchera abramsii |
Heuchera maxima |
|
Phenology | Flowering Jul–Aug. | Flowering Mar–May. |
Habitat | Rocky soil in red fir forest | Exposed cliffs |
Elevation | 2800-3100 m (9200-10200 ft) | 0-500 m (0-1600 ft) |
Distribution |
CA |
CA
|
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.) |
Of conservation concern. Heuchera maxima is found on the northern Channel Islands (Anacapa, Santa Cruz, Santa Rosa), Santa Barbara County. Heuchera maxima is in the Center for Plant Conservation’s National Collection of Endangered Plants. (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 , | Greene: Bull. Calif. Acad. Sci. 2: 149. 1886 , |
Web links |