Heuchera grossulariifolia |
Heuchera longiflora |
|
---|---|---|
gooseberry-leaf alumroot |
long-flower alum-root |
|
Habit | Herbs acaulescent; caudex branched. | Herbs acaulescent; caudex branched. |
Flowering stems | 15–65 cm, glabrous or short stipitate-glandular. |
often leafy, 30–95 cm, glabrous or short stipitate-glandular. |
Leaves | petiole glabrous or short stipitate-glandular; blade cordate or orbiculate, shallowly 3–5-lobed, 1–7 cm, base cordate, lobes rounded, margins dentate, apex obtuse, surfaces glabrous or short 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 | dense, interrupted. |
diffuse. |
Flowers | hypanthium weakly bilaterally symmetric, free 1.2–1.9 mm, cream, broadly campanulate, 4–7 mm, short stipitate-glandular; sepals erect, often red-tipped, equal, 2 mm, apex rounded; petals erect, pink or white, spatulate to narrowly oblanceolate, (clawed), unlobed, 1–3 mm, margins entire; stamens included 1.5 mm; (filaments strongly incurved, shorter than and almost concealed by anthers); styles included to 1 mm, 0.5 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 | ovoid, 5 mm, beaks divergent, not papillose. |
ovoid, 5–13 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.6 mm. |
dark brown, ellipsoid, 0.5–0.9 mm. |
2n | = 14, 28. |
= 14. |
Heuchera grossulariifolia |
Heuchera longiflora |
|
Phenology | Flowering May–Aug. | Flowering May–Jun. |
Habitat | Grassy hillsides, rocky canyon walls, alpine talus slopes | Rich, shaded woods and roadcuts over limestone substrates and outcroppings |
Elevation | 100-3400 m (300-11200 ft) | 100-500 m (300-1600 ft) |
Distribution |
ID; MT; NV; OR; WA
|
AL; KY; NC; TN; VA; WV |
Discussion | Heuchera grossulariifolia includes both diploids and autotetraploids. K. A. Segraves and J. N. Thompson (1999) analyzed floral traits and flowering phenology in diploid and autotetraploid plants. Overall, plant size was greater in tetraploids than in diploids; flowers of tetraploids were larger (average hypanthium 6.5 mm) than those of diploids (average hypanthium 5.5 mm) and had a slightly different shape and phenology, but the diploids and tetraploids were not assigned taxonomic status in their study. Diploids and tetraploids were mixed in some populations, where characters intergraded (D. E. Soltis, pers. comm.). The autotetraploids have had two to seven independent origins from diploid progenitors, and do not represent a monophyletic lineage (Segraves and Thompson; Segraves et al. 1999). (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. 103. | FNA vol. 8, p. 97. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | H. cusickii, H. grossulariifolia var. tenuifolia, H. tenuifolia | H. aceroides, H. longiflora var. aceroides, H. scabra |
Name authority | Rydberg: Mem. New York Bot. Gard. 1: 196. (1900) | Rydberg: in N. L. Britton, Man. Fl. N. States, 482. (1901) |
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