Jepson Herbarium
		University of California, Berkeley

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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 CA (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).
100+ species: generally n temperate. (Latin: ancient name) [Ertter & Lewis 2008 Madroño 55:170–177] Spp. hybridize freely; other non-natives established locally. FNANM treatment by Lewis & Ertter uses both subspp. and vars., the latter mostly reserved for localized variants within a subsp.
Unabridged references: [Lewis & Ertter 2007 Novon 17:342–353]

Shrub or thicket-forming, generally 5–20 dm.
Stem: prickles paired or not, 10–20 mm, generally ± compressed and thick-based, ± straight to ± curved.
Leaf: axis ± hairy, glandular; leaflets generally 5–7, sparsely hairy; terminal leaflet ± 15–50(60) mm, ± wide- elliptic to - ovate, widest at or below middle, tip ± obtuse.
Inflorescence: generally 1(6)-flowered; pedicels generally ± 10–20 mm, variously glabrous, hairy, and/or glandular.
Flower: hypanthium generally 5–7 mm wide at flower, glabrous, glandular or not, neck 3–6 mm wide; sepals generally glandular, entire, tip generally > body, toothed; petals 15–25 mm, pink; pistils generally 30–60.
Fruit: (10)13–20 mm wide, generally ± spheric; sepals generally erect, ± persistent; achenes generally 4.5–6 mm.
n=21. [Online Interchange]

Stem: densely branched; prickles generally many.
Leaf: leaflets ± glandular, especially beneath, margins double-toothed.
Generally ± moist flats; < 700 m. North Coast, Outer North Coast Ranges, Central Coast;

Previous taxon: Rosa nutkana subsp. macdougalii
Next taxon: Rosa pinetorum

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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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Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; 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 have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. 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 Manual flowering time.