The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Abrams' alumroot, San Gabriel alum-root

Laguna Mountain alumroot, Laguna Mountains alum-root, Mt. Laguna alumroot

Habit Herbs subcaulescent; caudex branched. Herbs acaulescent; caudex branched.
Flowering stems

6–15 cm, short stipitate-glandular.

20–30 cm, sparsely long 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 sparsely short to long stipitate-glandular;

blade orbiculate or reniform, shallowly 5-lobed, 1.5–4 cm, base shallowly cordate, lobes rounded, margins dentate, apex obtuse, surfaces sparsely long stipitate-glandular on veins abaxially, glabrous or long stipitate-glandular adaxially.

Inflorescences

dense.

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 1.5–2.2 mm on adaxial side, deep rose-purple, cylindric, 4–5 mm, short stipitate-glandular proximally, long stipitate-glandular distally;

sepals spreading, green- and darker red-tipped, equal, 1.3–1.4 mm, apex rounded;

petals spreading, white, broadly oblanceolate, unlobed, 4–5 mm (much longer than sepals), margins entire;

stamens included 1 mm;

styles included 1–2 mm, 1.5 mm, 0.1+ mm diam.

Capsules

ovoid, 3.5–5 mm, beaks divergent, not papillose.

ovoid, 3 mm, beaks divergent, not papillose.

Seeds

dark brown, ellipsoid, 0.6 mm.

dark brown, ellipsoid, ca. 0.7 mm.

Inflorescenses

moderately diffuse.

Heuchera abramsii

Heuchera brevistaminea

Phenology Flowering Jul–Aug. Flowering Jul–Sep.
Habitat Rocky soil in red fir forest Rocky slopes in montane chaparral, yellow pine forests
Elevation 2800-3100 m (9200-10200 ft) 1500-1900 m (4900-6200 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
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.)

Of conservation concern.

Heuchera brevistaminea occurs in the Laguna Mountains, San Diego County. It closely resembles H. abramsii, H. caespitosa, H. elegans, and H. pulchella.

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

Source FNA vol. 8, p. 99. FNA vol. 8, p. 99.
Parent taxa Saxifragaceae > Heuchera Saxifragaceae > Heuchera
Sibling taxa
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. grossulariifolia, 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
H. abramsii, H. alba, H. americana, H. bracteata, H. caespitosa, H. caroliniana, H. chlorantha, H. cylindrica, H. eastwoodiae, H. elegans, H. glabra, H. glomerulata, H. grossulariifolia, 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
Name authority Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 109. 1905 , Wiggins: Contr. Dudley Herb. 1: 100, plate 8. 1929 ,
Web links