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Prunus virginiana var. demissa
WESTERN CHOKE CHERRY

Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key

Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera; treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: PrunusView DescriptionDichotomous Key

Habit: Shrub, tree. Leaf: simple, alternate or clustered on short-shoots, entire to serrate, generally glabrous, generally glandular on teeth and at blade-petiole junction, veins pinnate; stipules deciduous. Inflorescence: raceme, umbel-like or subsessile cluster, or fls 1; pedicel bractlets 0. Flower: hypanthium cup- to urn-shaped, deciduous in fruit, bractlets 0; sepals erect to reflexed; stamens generally 10--30, generally in 2+ whorls; pistil 1, ovary superior, chamber 1, ovules 2, style 1, stigma +- spheric or disk-like. Fruit: drupe, generally ovoid to spheric.
Species In Genus: 200+ species: worldwide, especially northern temperate. Etymology: (Greek: plum, prune) Toxicity: Seeds of many species +- TOXIC from production of hydrocyanic acid. Note: Many cultivated for wood, ornamental, edible fruit; some persisting near human habitations, some possibly naturalized (e.g., Prunus laurocerasus L.).
Unabridged Note: Many cultivated for wood, ornamental, edible fruit; some persisting near human habitation (Prunus armeniaca L., apricot; Prunus avium (L.) L., sweet cherry; Prunus caroliniana (Mill.) Aiton; Prunus cerasus L., sour cherry; Prunus domestica L., plum; Prunus laurocerasus L., laurel cherry; Prunus lusitanica L., Portugal laurel; Prunus mahaleb L.; Prunus munsoniana W. Wight & Hedrick; Prunus speciosa (Koidz.) Nakai; Prunus yedoensis Matsum.).
eFlora Treatment Author: Joseph R. Rohrer

Prunus virginiana L. var. demissa (Nutt.) Torr.
NATIVE
Habit: Shrub, small tree < 6(10) m, often in thickets, not thorny. Leaf: deciduous; petiole 10--25 mm; blade 30--100 mm, elliptic to oblanceolate, finely serrate, base obtuse to subcordate, tip acuminate to obtuse. Inflorescence: raceme; flowers 18--many; pedicels 5--8(16) mm. Flower: sepals glabrous, gland-toothed; petals 4--7 mm, white. Fruit: 6--14 mm, glabrous, red to black; pulp fleshy. Chromosomes: 2n=16.
Ecology: Rocky slopes, canyons, scrubland, oak/pine woodland, conifer forest; Elevation: < 3000 m. Bioregional Distribution: CA-FP (exc coast, GV), GB; Distribution Outside California: to British Columbia, Montana, Texas, northern Mexico. Flowering Time: May--Jun Note: Prunus virginiana var. virginiana of eastern North America sometimes cultivated.
eFlora Treatment Author: Joseph R. Rohrer
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Citation for this treatment: Joseph R. Rohrer 2016. Prunus virginiana var. demissa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=64546, accessed on February 07, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 07, 2016.


Prunus virginiana var. demissa
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© 2013 Neal Kramer
Prunus virginiana var. demissa
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© 2009 Julie Kierstead Nelson
Prunus virginiana var. demissa
click for enlargement
© 2013 Neal Kramer
Prunus virginiana var. demissa
click for enlargement
© 2008 Keir Morse
Prunus virginiana var. demissa
click for enlargement
© 2012 Julie Kierstead Nelson
Prunus virginiana var. demissa
click for enlargement
© 2008 Keir Morse

More photos of Prunus virginiana var. demissa in CalPhotos


Geographic subdivisions for Prunus virginiana var. demissa:
CA-FP (exc coast, GV), GB;
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.