Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Michael O. Moore

Woody vines; tendrils opposite leaves; flowers sometimes unisexual
Leaves generally many, cauline, simple or compound, alternate, petioled, deciduous; stipules generally deciduous
Inflorescence cyme or panicle, generally opposite leaf, peduncled
Flower radial; sepals generally reduced, generally fused, lobes 5 or 0; petals generally 5, free, reflexed and falling individually (or adherent at tips, ± erect, and falling as unit), reddish or yellowish; stamens generally 5, opposite petals; nectaries 0 or between stamens as ± free glands; ovary 1, superior, chambers generally 2(–4), style 1 or 0, stigma inconspicuous or head-like
Fruit: berry
Seeds 1–6, large
Genera in family: 15 genera, ± 800 species: especially warm regions; some cultivated (Cissus , grape ivy; Parthenocissus ; Vitis )
Reference: [Moore 1991 Sida 14:339–367]



Stem: bark not peeling; stem center white, nodal partitions 0; tendrils generally tipped with adhering disks
Leaf palmately compound; leaflets 3–7, coarsely serrate
Inflorescence: cyme
Flower generally bisexual; calyx red, lobes shallow; petals free, reddish, margins greenish; nectaries obscure or 0
Fruit obovoid
Seeds 1–4, obovoid
Species in genus: 15 species: temp, tropical
Etymology: (Greek: virgin ivy)


P. vitacea (Knerr) Hitchc.


Stem: tendril branches few, adherent disks generally 0
Leaf: leaflet upper surface glossy, glabrous, lower surface ± dull, glabrous to hairy
Inflorescence: forked at peduncle tip, sometimes again above
Fruit 9–12 mm wide, dark blue to black
Chromosomes: 2n=40
Ecology: Uncommon. Hillsides, thickets, ravines, open woodlands
Elevation: < 1000 m.
Bioregional distribution: Great Central Valley, Central Western California, Southwestern California
Distribution outside California: to Texas, ne US
Synonyms: P. inserta (Kerner) K. Fritsch misapplied
Possibly alien in CA
Horticultural information: 4, 5, 6; IRR: 1, 2, 3, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

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bioregional map for PARTHENOCISSUS%20vitacea 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 Parthenocissus vitacea
Retrieve dichotomous key for Parthenocissus
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