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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Michael Nee

Annual to shrub
Leaves generally simple, generally alternate, generally petioled; stipules 0; blade entire to deeply lobed
Inflorescence various
Flower bisexual; calyx lobes generally 5; corolla ± radial, cylindric to rotate, lobes generally 5; stamens 5, alternate corolla lobes; ovary superior, generally 2-chambered, style 1
Fruit: berry or capsule, 2–5-chambered
Genera in family: 75 genera, 3000 species: worldwide, especially ± tropical; many alien weeds in CA; many cultivated for food, drugs, or ornamental (potato, tomato, peppers, tobacco, petunia); many TOXIC.


Annual or perennial herb, sticky-glandular
Stem: main branches from base, with ± long internodes
Leaves subopposite near flowers, entire
Inflorescence: flowers solitary in axils of leaves or leaf-like bracts
Flower: calyx divided nearly to base, lobes ± leaf-like, especially in fruit; corolla funnel-shaped, 5-lobed; stamens ± equal or 1 short, 2 medium, 2 long
Fruit: capsule
Seeds many, minute, spheric to angled
Species in genus: ± 30 species: generally South America; some cultivated for ornamental, sometimes waifs
Etymology: (Native Am: petun, name for tobacco)


P. parviflora Juss.

Stem prostrate to decumbent, < 4 dm, rooting at nodes; axillary branches short, leafy
Leaf 5–14 mm, ± oblanceolate, fleshy, ± subsessile
Flower: calyx lobes 3–6 mm, < 11 mm in fruit, elliptic to narrowly obovate; corolla 4–6 mm, purplish, tube whitish
Fruit 2–3 mm
Seeds pale brown
Ecology: Open washes, dry streambeds
Elevation: < 1300 m.
Bioregional distribution: Central Western California, South Coast, n Channel Islands (Santa Rosa Island), Peninsular Ranges, Sonoran Desert
Distribution outside California: to sw Utah, se US, Mexico; also S.America; waif elsewhere in US
Flowering time: Apr–Aug

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bioregional map for PETUNIA%20parviflora 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 Petunia parviflora
Retrieve dichotomous key for Petunia
Overlay Consortium of California Herbaria specimen data by county on this map
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