Directory       News       Site Map       Home
    Jepson eFlora
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.


Shrub, tree; dioecious or flowers bisexual and pistillate. Leaf: simple or compound, deciduous or evergreen, entire, toothed, or lobed. Inflorescence: panicle, terminal on short twigs, open to dense; flowers ± sessile. Flower: stamens 5; styles 3, free or ± fused. Fruit: spheric or ± flat, glabrous or glandular-hairy, generally ± red; pulp thin or thick, ± resinous.
± 150 species: warm temperate. (Greek: ancient name for sumac) [Yi et al. 2004 Molec Phylogen Evol 33:861–879]
Unabridged references: [Burke & Hamrick 2002 J Heredity 93:37–41; Miller et al. 2001 Int J Plant Sci 162:1401–1407; Li et al. 1999 J Torrey Bot Soc 126:279–288; Cronquist 1997 In: Intermountain Flora 3A: 313–315; Wannan & Quinn 1991 Bot J Linn Soc 107:349–385; Wannan & Quinn 1990 Bot J Linn Soc 103:225–252; Brizicky 1963 J Arnold Arbor 44:60–80; Barkley 1937 Ann Missouri Bot Gard 24:265–498]
Unabridged note: 2 species with pinnately compound leaves native to eastern North America, Utah, cultivated in California: Rhus glabra L., smooth sumac (petioles, young stems glabrous), Rhus typhina L., staghorn sumac (petioles, young stems densely hairy).

Key to Rhus

1. Leaves deeply lobed to ternate-compound, deciduous ..... R. aromatica

1' Leaves generally simple, unlobed, evergreen

2. Leaf generally flat, entire to toothed, tip ± obtuse; sepals green, glandular-ciliate ..... R. integrifolia

2' Leaf generally folded along midrib, entire, tip acute to acuminate; sepals red, ciliate ..... R. ovata


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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.