Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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James R. Shevock

Perennial, shrubs, trees, very aromatic, sometimes thorny
Leaves generally alternate, simple to pinnately compound (sometimes reduced to spines), prominently oil-gland-dotted; stipules 0
Inflorescence: cyme, raceme, or flowers solitary, generally bracted
Flower generally bisexual, generally strongly aromatic; sepals generally 5, free or fused at base, generally persistent; petals generally 5, free or fused at base, generally whitish or greenish; stamens generally 2–4 X petal number; ovary generally superior, generally lobed, chambers generally 4–5, ovules generally many
Fruit: berry, drupe, winged achene, or capsule, generally aromatic
Seeds generally oily
Genera in family: ± 150 genera, ± 1500 species: especially tropical, warm temp, especially s Africa, Australia; used or cultivated for food (Citrus , 50 species), perfume, medicine, timber, ornamental (Choisya, Skimmia , etc.). Some TOXIC: oils may promote localized sunburn or produce dermatitis.



Shrub, small tree, generally with bisexual and pistillate flowers
Leaves pinnately compound; leaflets 3–5, ± sessile, entire to finely serrate
Inflorescence panicle-like
Flower: sepals 4–5; petals 4–5, greenish white; stamens 4–5, filaments hairy on inner side; ovary chambers 2, style short, stigmas 2
Fruit dry, indehiscent, ± flat, gland-dotted; wing prominent, round
Seeds 2
Species in genus: 3 species: US, Mex
Etymology: (Greek: elm, from similar fruit)


P. crenulata Greene

Plant generally < 5 m
Leaves deciduous; leaflets 3, 2–7 cm, lanceolate to obovate, glabrous above, ± hairy beneath; petiole 2–5 cm
Inflorescence ± flat-topped
Flower: sepals minute; petals 4–5 mm, fragrant
Fruit 1–2 cm, ± straw-colored; wing ± notched at both ends; style persistent
Ecology: Scrub, woodland
Elevation: generally < 700 m.
Bioregional distribution: Inner North Coast Ranges, Cascade Range Foothills, Sierra Nevada Foothills, San Francisco Bay Area
Horticultural information: 7, 14, 15, 16, 17; IRR: 8, 9, 18, 19, 20, 21, 22, 23, 24.

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bioregional map for PTELEA%20crenulata being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Ptelea crenulata
Retrieve dichotomous key for Ptelea
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