Heuchera abramsii |
Heuchera hallii |
|
---|---|---|
Abrams' alumroot, San Gabriel alum-root |
Front Range alum-root |
|
Habit | Herbs subcaulescent; caudex branched. | Herbs acaulescent; caudex branched or unbranched. |
Flowering stems | 6–15 cm, short stipitate-glandular. |
10–30 cm, glabrous or 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. |
petiole glabrous or short stipitate-glandular; blade rounded-reniform, deeply 5–7-lobed, 1–3.8 cm, base cordate, lobes rounded, margins dentate, apex obtuse, surfaces glabrous or short stipitate-glandular. |
Inflorescences | dense. |
dense, (sometimes secund). |
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 weakly bilaterally symmetric, free 0.8 mm, greenish or pinkish yellow, broadly campanulate, 4–5.5 mm, short stipitate-glandular proximally, medium stipitate-glandular distally; sepals erect, green-tipped, equal, 1.2–2 mm, apex rounded-ovate; petals usually spreading, white, broadly oblanceolate, (clawed), unlobed, 1.8–2.5 mm, margins entire; stamens included 1 mm; (filaments erect or incurved distally, relatively slender, longer than and not concealed by anthers); styles included 1.5 mm, 1 mm, 0.1+ mm diam. |
Capsules | ovoid, 3.5–5 mm, beaks divergent, not papillose. |
globose or ovoid, 3.5–4 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.6 mm. |
dark brown, fusiform, 0.6 mm. |
2n | = 14. |
|
Heuchera abramsii |
Heuchera hallii |
|
Phenology | Flowering Jul–Aug. | Flowering Jun–Aug. |
Habitat | Rocky soil in red fir forest | Subalpine and alpine regions |
Elevation | 2800-3100 m (9200-10200 ft) | 2200-3000 m (7200-9800 ft) |
Distribution |
CA |
CO
|
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 hallii occurs in south-central Colorado. It resembles H. bracteata in shape and size of the flowers and congestion of the inflorescence. It is distinguished by having stamens and styles included; H. bracteata has stamens and styles exserted. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 99. | FNA vol. 8, p. 102. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 109. 1905 , | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 62. 1864 , |
Web links |