|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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 |
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
Shrub to vine, often thicket-forming, generally prickly. Leaf: generally odd-pinnately compound; stipules generally attached to petiole, generally gland-margined. Inflorescence: generally ± cyme or flowers 1; pedicel bractlets 0. Flower: hypanthium urn-shaped, bractlets 0; sepals often with long expanded tip; petals generally 5 (except cultivated), generally pink in California (white to red or yellow); stamens generally > 20; pistils generally many, ovaries superior, styles attached at tip, generally hairy. Fruit: bony achenes generally enclosed in fleshy, generally ± red hypanthium (hip).Key to Rosa
100+ species: generally northern temperate. (Latin: ancient name) [Ertter & Lewis 2008 Madroño 55:170–177] Species hybridize freely; other non-natives established locally. FNANM treatment by Lewis & Ertter uses both subspecies, varieties, the latter mostly reserved for localized variants within a subsp.; 2 vars. in Rosa woodsii subsp. gratissima treated here but not in TJM2 (2012).
Unabridged references: [Lewis & Ertter 2007 Novon 17:342–353]
Dwarf shrub, openly rhizomed, generally < 5 dm. Stem: prickles few to many, generally not paired, 3–8(12) mm, generally slender (thick-based), ± straight. Leaf: axis generally glabrous (finely hairy), glandular; leaflets 5–7(9), 2–4 per side, (±) glabrous; terminal leaflet ± 10–30 mm, ± widely elliptic (obovate), widest near middle, tip obtuse to truncate, margins ± double-toothed, glandular. Inflorescence: 1–10-flowered; pedicels generally 5–15 mm, glabrous, ± stalked-glandular. Flower: hypanthium generally 4–5 mm wide at flower, stalked-glandular, neck 3–4 mm wide; sepals generally glandular, entire, tip generally ± = body, entire; petals 10–15 mm, pink to red; pistils 10–20. Fruit: 7–12(15) mm wide, ± spheric; sepals ± erect, persistent; achenes 3.5–5 mm.
2n=28. Open forest, chaparral, especially after fire; generally 150–1550(1950) m. Northwestern California, Central Western California, Modoc Plateau; Oregon. Generally blooms after fires. Plants in southern Central Western California with larger prickles, described as Rosa granulata Greene, may be hybrids with Rosa californica; study needed. Apr–Aug [Online Interchange]
Unabridged note: The author has indicated that the disjunct Modoc Plateau site is at 1950 m.
Previous taxon: Rosa rubiginosa
Next taxon: Rosa woodsii
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 20 2014
Citation for this treatment: [Author of taxon treatment] 2013. Rosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41696, accessed on Dec 20 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.
See CalPhotos for additional images
© 2001 Jeff Abbas
|Geographic subdivisions indicated for the distribution of Rosa spithamea|| 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
(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