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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.

 

VITIS GRAPE
Stem: bark peeling; stem center brown, partitioned at nodes; tendril tips without adhering disks. Leaf: simple, crenate to serrate. Inflorescence: panicle of often head- or umbel-like clusters. Flower: unisexual or bisexual; calyx ± green, lobes 0 or short; petals adherent at tips, ± yellow; stamens 3–9 mm, generally erect, in pistillate flowers reflexed and sterile or 0; nectaries ± free glands. Fruit: 4–20 mm wide, spheric to ovoid, glaucous or not. Seed: 1–4, obovoid.
65 species: temperate, subtropics. (Latin: vine) Vitis californica, Vitis girdiana differ in nuclear rDNA sequences.
Unabridged references: [Olmo & Koyama 1980 Proc 3rd Intl Symp Grape Breeding 33–41]

Key to Vitis

1. Flower bisexual; fruit spheric to ovoid, skin adherent to pulp; stem hairy, generally glabrous in age ..... V. vinifera

1' Flower unisexual; fruit spheric or 0, skin separating from pulp; stem ± tomentose or glabrous

2. Leaf reniform, glabrous, ± folded at midrib; stem climbing or not, < 1 m ..... [V. rupestris]

2' Leaf cordate to reniform, ± tomentose, not folded at midrib; stem climbing, > 1 m

3. Fruit purple, glaucous, generally > 8 mm wide if seeds 3–4; round structure opposite seed attachment scar generally raised; stipules generally < 3.5 mm; stem tomentose when young, less so in age, nodal partitions generally 3–4 mm thick ..... V. californica

3' Fruit black, ± not glaucous, generally < 8 mm wide if seeds 3–4; round structure opposite seed attachment scar generally sunken; stipules generally > 3.5 mm; stem densely tomentose in youth, ± remaining so in age, nodal partitions generally 2–3 mm thick ..... V. girdiana

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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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