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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.



Thomas J. Rosatti & Charles D. Bell

Shrub, slender, generally hairy, also ± glandular, especially in inflorescence, generally deciduous. Leaf: simple, entire to lobed. Inflorescence: compound cyme, umbel-like, generally terminal, rounded or ± flat-topped, generally with oblanceolate bracts, marginal flowers larger, sterile or all flowers ± alike; peduncles 1.5–4 cm; rays generally 7. Flower: ovary chambers 1 (2 abort), ovule pendent; style short, stigma lobes 3. Fruit: drupe, drupe-like. Seed: 1.
± 250 species: northern temperate, subtropics. (Latin: for pliable branches used in binding) [Clement et al. 2014 Amer J Bot 101:1029–1049] Viburnum rigidum naturalized in San Francisco Bay Area (Tilden Park); material previously identified as Viburnum edule belongs instead to Viburnum opulus.

Key to Viburnum

1. Leaves (except distal) 3-lobed, dentate, widely ovate; petiole with a few large glands distally, without nonglandular hairs; inflorescence with marginal flowers larger, sterile ..... V. opulus

1' Leaves unlobed, coarsely dentate above middle or entire, elliptic or ovate-lanceolate to round or cordate; petiole without glands, with many nonglandular hairs throughout; inflorescence with all flowers ± alike, fertile

2. Leaves coarsely dentate above middle, elliptic to round or cordate ..... V. ellipticum

2' Leaves entire, ovate-lanceolate to -round ..... V. rigidum


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [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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