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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Perennial herb from caudex or rhizome, generally ± hairy. Stem: often ± leafy on proximal 1/2, rarely trailing and leafy throughout. Leaf: generally simple, basal and/or cauline, generally alternate, generally petioled; veins ± palmate. Inflorescence: raceme or panicle, generally ± scapose. Flower: generally bisexual, generally radial; hypanthium free to ± fused to ovary; calyx lobes generally 5; petals generally 5, free, generally clawed, generally white; stamens 3, , 5, 8, or 10; pistils 1 (carpels ± fused, ovary lobed, chambers 1 or 2, placentas generally 2(3), axile or parietal or occasionally proximally axile and distally marginal in ovary lobes) or 2 (carpels free, placentas marginal), ovary nearly superior to inferior, occasionally more superior in fruit, styles generally 2(3). Fruit: capsule (generally 2(3)-beaked, valves generally 2(3), generally equal) or 2 follicles. Seed: generally many, small.
± 30 genera, 600 species: especially northern temperate, arctic, alpine; some cultivated (Bergenia, Darmera, Heuchera, Saxifraga, Tellima, Tolmiea). [Soltis et al. 2001 Ann Missouri Bot Gard 88:669–693; Okuyama et al. 2008 Molec Phylogen Evol 46:560–575] California Mitella moved to Mitellastra, Ozomelis, Pectiantia; Suksdorfia ranunculifolia to Hemieva. Parnassia moved to Parnassiaceae. —Scientific Editor: Bruce G. Baldwin.
Unabridged references: [Soltis 1988 Syst Bot 13:64–72]
Key to Saxifragaceae
Rhizome scaly; bulblets 0. Leaf: basal, sometimes a few cauline; blade ovate, base cordate to reniform, lobes and teeth generally shallow, irregular. Inflorescence: panicle, often spike- or raceme-like; bracts generally scale-like. Flower: radial or ± bilateral; hypanthium partly fused to ovary; calyx lobes equal or not; petals 0 or 5, generally equal, clawed, generally white; stamens 5, generally equal; pistil 1, ovary > 1/2-inferior, chamber 1, placentas 2, parietal. Fruit: capsule. Seed: red-brown, minutely spiny.Key to Heuchera
50 species: North America. (J.H. von Heucher, German professor of medicine, 1677–1747) Highly variable; needs study.
Unabridged references: [Rosendahl et al. 1936 Minnesota Stud Plant Sci 2:1–180]
Plant 7–55 cm. Leaf: petiole 1–15 cm; blade 8–60 mm, broadly ovate to ± round, ± deeply 5–9-lobed. Inflorescence: often 1-sided, open or dense, cylindric to conic, glandular. Flower: ± bilateral; hypanthium + calyx 3–6 mm; part of hypanthium fused to ovary 0.9–2.5 mm, ± = long side of free part; calyx lobes (0.5)1–2 mm, generally unequal, ± white to pink-red, tips green, becoming redder; petals 3–6 mm, thread-like to narrowly oblanceolate, claw ± = blade; stamens > calyx lobes, exserted; mature styles generally >> 1.5 mm, exserted.
2n=14,28. Dry, rocky areas; 1000–4000 m. High Sierra Nevada, Peninsular Ranges, Warner Mountains, East of Sierra Nevada, Desert Mountains; to Oregon, Idaho, Colorado, Texas, northern Mexico. [Heuchera rubescens var. alpicola Jeps.; Heuchera rubescens var. glandulosa Kellogg; Heuchera rubescens var. rydbergiana Rosend. et al.; Heuchera rubescens var. versicolor (Greene) M.G. Stewart] Morphological characters used to delimit previously recognized varieties vary ± continuously and lack geographical structure. May–Sep [Online Interchange]
Previous taxon: Heuchera pilosissima
Next taxon: Jepsonia
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Heuchera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28140, accessed on Sep 21 2014
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|Geographic subdivisions indicated for the distribution of Heuchera rubescens|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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