Flora of North America species comparison

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Heuchera grossulariifolia

gooseberry-leaf alumroot
Habit Herbs acaulescent; caudex branched.
Flowering stems

15–65 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.
Inflorescences

dense, interrupted.
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.
Capsules

ovoid, 5 mm, beaks divergent, not papillose.
Seeds

dark brown, ellipsoid, 0.6 mm.
2n

= 14, 28.

Heuchera grossulariifolia
Phenology Flowering May–Aug.
Habitat Grassy hillsides, rocky canyon walls, alpine talus slopes
Elevation 100-3400 m (300-11200 ft)
Distribution
from FNA
ID; MT; NV; OR; WA
[WildflowerSearch map]
[BONAP county map]
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.)
Source FNA vol. 8, p. 103.
Parent taxa Saxifragaceae > Heuchera
Sibling taxa
H. abramsii, H. alba, H. americana, H. bracteata, H. brevistaminea, H. caespitosa, H. caroliniana, H. chlorantha, H. cylindrica, H. eastwoodiae, H. elegans, H. glabra, H. glomerulata, H. hallii, H. hirsutissima, H. longiflora, H. maxima, H. merriamii, H. micrantha, H. novamexicana, H. parishii, H. parviflora, H. parvifolia, H. pilosissima, H. pubescens, H. pulchella, H. richardsonii, H. rubescens, H. sanguinea, H. villosa, H. wootonii
Synonyms H. cusickii, H. grossulariifolia var. tenuifolia, H. tenuifolia
Name authority Rydberg: Mem. New York Bot. Gard. 1: 196. (1900)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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