Flora of North America species comparison

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Heuchera micrantha var. erubescens

Heuchera micrantha var. macropetala
Photo is of parent taxon

crevice alumroot
Photo is of parent taxon

crevice alumroot
Leaves

petiole short stipitate-glandular or sparsely long stipitate-glandular;

blade pentagonal or heptagonal, deeply lobed.

petiole short stipitate-glandular or sparsely long stipitate-glandular;

blade pentagonal, deeply lobed.
Inflorescences

short stipitate-glandular.

short stipitate-glandular.
Flowers

hypanthium obconic, 1.7–3.1 × 1–2.3 mm (1.4 times longer than wide), short stipitate-glandular;

sepals 0.5–1.8 mm, apex acute;

petals 0.2–0.6 mm wide;

styles 0.2–0.6 mm.

hypanthium hemispheric, 1–3.5 × 1–3.5 mm (1 times long as wide), short stipitate-glandular;

sepals 0.5–1.5 mm, apex broadly rounded;

petals 0.4–1.4 mm wide;

styles 1.2–3.9 mm.
2n

= 14.

Heuchera micrantha var. erubescens

Heuchera micrantha var. macropetala
Phenology Flowering Jun–Jul. Flowering Apr–Jun.
Habitat Mixed evergreen forest on limestone, mica schist, granite, or serpentine soils Mixed evergreen forest on limestone or serpentine-derived soils
Elevation 100-2200 m (300-7200 ft) 100-1800 m (300-5900 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA; OR
[BONAP county map]
Discussion

Variety erubescens occurs in the Klamath Mountains, middle Sierra Nevada, and Diablo and Santa Lucia mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety macropetala is known from the Klamath and Siskiyou mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 92. FNA vol. 8, p. 91.
Parent taxa Saxifragaceae > Heuchera > Heuchera micrantha Saxifragaceae > Heuchera > Heuchera micrantha
Sibling taxa
H. micrantha var. diversifolia, H. micrantha var. hartwegii, H. micrantha var. macropetala, H. micrantha var. micrantha
H. micrantha var. diversifolia, H. micrantha var. erubescens, H. micrantha var. hartwegii, H. micrantha var. micrantha
Synonyms H. erubescens
Name authority (A. Braun & C. D. Bouché) Rosendahl: Bot. Jahrb. Syst. 37(2, Beibl. 83): 77. (1905) Shipes & E. F. Wells: Rhodora 98: 366. (1997)
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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