Jepson eFlora: Taxon page
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Vitis rupestris
ROCK GRAPE

Higher Taxonomy
Family: VitaceaeView DescriptionDichotomous Key

Common Name: GRAPE FAMILY
Habit: Woody vine [shrub]; tendrils opposite leaves. Stem: generally lenticelled. Leaf: alternate, simple or compound, petioled, deciduous; stipules generally deciduous. Inflorescence: cyme, panicle, generally opposite leaf, peduncled. Flower: generally bisexual, radial; sepals generally reduced, generally fused, lobes 0 or 5; petals generally 5, free, reflexed, falling individually, or adherent at tips, +- erect, falling as unit, +- red or +- yellow; 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. Seed: 1--6.
Genera In Family: 15 genera, +- 800 species: especially warm regions; some cultivated (Cissus, grape ivy; Parthenocissus, Virginia creeper; Vitis, grape).
eFlora Treatment Author: Eric B. Wada & M. Andrew Walker, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: VitisView DescriptionDichotomous Key

Common Name: 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.
Species In Genus: 65 species: temperate, subtropics. Etymology: (Latin: vine) Note: Vitis californica, Vitis girdiana differ in nuclear rDNA sequences.

Vitis rupestris Scheele
WAIF
Stem: climbing or not, < 1 m, glabrous; nodal partitions generally 1--2 mm thick; tendrils ephemeral if not climbing. Leaf: reniform, +- folded at midrib, generally serrate, glabrous, lobes 0 or 3, shallow; stipules generally > 3.5 mm. Flower: unisexual. Fruit: generally 0. Chromosomes: 2n=38.
Ecology: Uncommon. Abandoned vineyards, roadsides; Elevation: < 1000 m. Bioregional Distribution: s NCoRO, s NCoRI, GV, CW; Distribution Outside California: Native to central United States, most common in southern Missouri. Flowering Time: Apr--May Note: Plants likely rootstock cultivar 'St. George' remaining from abandoned vineyards.
eFlora Treatment Author: Eric B. Wada & M. Andrew Walker
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Citation for this treatment: Eric B. Wada & M. Andrew Walker 2016. Vitis rupestris, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=48433, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 29, 2016.


Geographic subdivisions for Vitis rupestris:
s NCoRO, s NCoRI, GV, CW;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.