Heuchera elegans |
Heuchera longiflora |
|
---|---|---|
urn-flower alum-root |
long-flower alum-root |
|
Habit | Herbs subcaulescent; caudex branched. | Herbs acaulescent; caudex branched. |
Flowering stems | 10–40 cm, sparsely medium stipitate-glandular. |
often leafy, 30–95 cm, glabrous or short stipitate-glandular. |
Leaves | petiole long stipitate-glandular; blade reniform or orbiculate, shallowly 5-lobed, 1.5–3.5 cm, base cordate or truncate, lobes rounded, margins dentate, apex obtuse, surfaces short or long stipitate-glandular. |
petiole glabrous or short stipitate-glandular; blade (often variegated adaxially), broadly ovate to cordate, shallowly 5-lobed, 3–12 cm, base cordate or nearly truncate, lobes rounded to widely ovate, terminal lobes often elongated, margins dentate, apex acute or obtuse, surfaces glabrous or short stipitate-glandular, at least on veins. |
Inflorescences | diffuse. |
|
Flowers | hypanthium strongly bilaterally symmetric, free 3–3.5 mm on adaxial side, pink to purplish, narrowly cylindric or cylindric-urceolate, 4–7 mm, short stipitate-glandular proximally, densely long stipitate-glandular distally; sepals spreading, green-tipped, unequal, 2 mm on adaxial side of hypanthium, apex obtuse or rounded; petals spreading, white, broadly oblanceolate, (clawed), unlobed, 3–4 mm (longer than sepals), margins entire; stamens included 0.5 mm to exserted 0.5 mm; styles included to 2 mm, 1.5–2 mm, 0.1+ mm diam. |
hypanthium strongly bilaterally symmetric, free 2.2–6.2 mm, green, gibbous-tubular, abruptly inflated distal to adnation to ovary, 6.6–12.6 mm, short stipitate-glandular; sepals inflexed (closing mouth of flower), darker green-tipped, equal, 2–3.7 mm, apex rounded; petals inflexed (closing mouth of flower), white, pink, or purple, spatulate, unlobed, 1.8–5.5 mm, margins often fimbriate; stamens 2.4 mm included to 0.7 mm exserted; styles included 1.3–5.3 mm, 1.5–2.5 mm, to 0.1 mm diam. |
Capsules | urceolate, 4–6 mm, beaks divergent, not papillose. |
ovoid, 5–13 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.7 mm. |
dark brown, ellipsoid, 0.5–0.9 mm. |
Inflorescenses | dense. |
|
2n | = 14. |
|
Heuchera elegans |
Heuchera longiflora |
|
Phenology | Flowering May–Jun. | Flowering May–Jun. |
Habitat | Rocky sites in yellow pine and red fir forests | Rich, shaded woods and roadcuts over limestone substrates and outcroppings |
Elevation | 1500-2600 m (4900-8500 ft) | 100-500 m (300-1600 ft) |
Distribution |
CA |
AL; KY; NC; TN; VA; WV |
Discussion | Heuchera elegans occurs in the mountains of southern California, chiefly in the San Gabriel Range in Los Angeles and San Bernardino counties and vicinity. It resembles H. caespitosa. This group is in need of phylogenetic study. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Heuchera longiflora is restricted to limestone outcroppings and is rare in all the states where it is found. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 100. | FNA vol. 8, p. 97. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | H. aceroides, H. longiflora var. aceroides, H. scabra | |
Name authority | Abrams: Bull. S. Calif. Acad. Sci. 1: 67. 1902 , | Rydberg: in N. L. Britton, Man. Fl. N. States, 482. (1901) |
Web links |