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Abrams' alumroot, San Gabriel alum-root

urn-flower alum-root

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

6–15 cm, short stipitate-glandular.

10–40 cm, sparsely medium 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 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.

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 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.

Capsules

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

urceolate, 4–6 mm, beaks divergent, not papillose.

Seeds

dark brown, ellipsoid, 0.6 mm.

dark brown, ellipsoid, 0.7 mm.

Inflorescenses

dense.

Heuchera abramsii

Heuchera elegans

Phenology Flowering Jul–Aug. Flowering May–Jun.
Habitat Rocky soil in red fir forest Rocky sites in yellow pine and red fir forests
Elevation 2800-3100 m (9200-10200 ft) 1500-2600 m (4900-8500 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
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.)

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.)

Source FNA vol. 8, p. 99. FNA vol. 8, p. 100.
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. brevistaminea, H. caespitosa, H. caroliniana, H. chlorantha, H. cylindrica, H. eastwoodiae, 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 , Abrams: Bull. S. Calif. Acad. Sci. 1: 67. 1902 ,
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