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Key to families | Table of families and genera
Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Plant 0.3–6 m. Stem: bark ± red, in age gray, shredding; twigs glabrous to hairy, occasionally glandular. Leaf: 0.3–8 cm, ovate to obovate, strong-veined abaxially, glabrous to hairy, occasionally glandular, teeth entire to compound; base truncate to wedge-shaped; petiole distinct or not. Inflorescence: 2–25 cm, 1.5–25 cm wide. Flower: hypanthium 3–5 mm wide; sepals 1–2 mm; petals 1.5–2 mm; style 1 mm. Fruit: achenes 1–1.5 mm, often with sessile glands. [Holodiscus saxicola A. Heller] Highly variable; varieties intergrade. [Online Interchange]
Unabridged note: Highly variable; varieties intergrade, especially. var. discolor and var. microphyllus. Intermediate plants from High Sierra Nevada, East of Sierra Nevada, described as Holodiscus saxicola A. Heller, Holodiscus boursieri (Carrière) Rehder, do not merit taxonomic status.
1. Leaf blade 1.5–8 cm, teeth toothed, base generally truncate to rounded; inflorescence 5–25 cm, 5–25 cm wide, branches generally many ..... var. discolor
1' Leaf blade 0.3–3 cm, teeth entire, above middle, base generally wedge-shaped; inflorescence 2–8 cm, 1.5–5 cm wide, branches 0–few
2. Leaf puberulent to glabrous both surfaces, glands visible ..... var. glabrescens
2' Leaf ± long-hairy 1 or both surfaces, glands 0 or generally obscured by hairs ..... var. microphyllus
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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