Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

ROSACEAE ROSE FAMILY

Daniel Potter & Barbara Ertter, family description, key to genera; treatment of genera by Daniel Potter, except as noted

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).
110 genera, ± 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. [Potter et al. 2007 Plant Syst Evol 266:5–43] Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis. —Scientific Editors: Daniel Potter, Thomas J. Rosatti.
Unabridged references: [Robertson 1974 J Arnold Arbor 55:303–332, 344–401, 611–662]

Key to Rosaceae

PRUNUS

Joseph R. Rohrer

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, cluster, or flowers 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.
200+ species: worldwide, especially northern temperate. (Greek: plum, prune) Seeds of many species ± TOXIC from production of hydrocyanic acid. 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.).

Key to Prunus

P. fasciculata (Torr.) A. Gray DESERT ALMOND
NATIVE
Shrub < 3 m, much-branched, thorny. Leaf: deciduous; petiole ± 0; blade 5–20 mm, 1–2(4) mm wide, linear to narrow-oblanceolate, generally entire, base long-tapered, tip acute to rounded. Inflorescence: subsessile cluster, flowers 1–2; pedicels 0–4 mm. Flower: generally unisexual by abortion of stamens or pistil; sepals glabrous, entire; petals 1.4–4 mm, white to ± yellow. Fruit: 7–15 mm, densely puberulent, gray to red-brown; pulp dry, thin. [Online Interchange]

P. fasciculata var. fasciculata
NATIVE
Leaf: puberulent.
Creosote-bush scrub, Joshua-tree or pinyon/juniper woodland; 700–2200 m. s Sierra Nevada Foothills, Tehachapi Mountain Area, s Inner South Coast Ranges, n Transverse Ranges, eastern Peninsular Ranges, Desert; to Utah, Baja California. Mar–May [Online Interchange]

Previous taxon: Prunus fasciculata
Next taxon: Prunus fasciculata var. punctata

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Prunus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=64518, accessed on Aug 21 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


Geographic subdivisions indicated for the distribution of Prunus fasciculata var. fasciculata 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.
READ ABOUT YELLOW FLAGS
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

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