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, tree, unarmed; evergreen or deciduous.
Leaf: simple, stipuled, petioled, entire.
Inflorescence: flowers 1 or clustered at branch tips; pedicel bractlets 0.
Flower: hypanthium bractlets 0; sepals persistent; petals clawed, erect, pink to ± red or rose, at least near base, or spreading, white; stamens 8–21, anthers darker after flower; ovary inferior, 2–5-chambered, styles 2–5, free.
Fruit: pome, drupe-like, generally orange to red, stones 2–5.
± 400 species: e hemisphere; many ornamental. (Latin: quince-like, possibly from leaf shape) [Fryer & Hylmö 2009 Cotoneasters. Timber Press] 2 subgenera, 1 with petals erect, pink to ± red (flower length important), 1 with petals spreading, white (flower width important).
Unabridged references: [Fryer & Hylmö 1998 New Plantsman 5:132–144; Fryer & Hylmö 2009. Cotoneasters: A Comprehensive Guide to Shrubs for Flowers, Fruit, and Foliage. Timber Press, Portland, OR. 344 p.]

Shrub 1–6 m; deciduous.
Leaf: blade 10–30 mm, generally ovate, abaxially sparsely appressed hairy, adaxially glabrous, shiny, tip acute.
Flower: 7.5–10 mm; petals erect, pink; stamens 20, filaments pink, anthers white; styles 3–5.
Fruit: 7–14 mm, 6–9.5 mm wide, obovate to obovate- elliptic, red-orange; stones 3–5.
Thickets, open forest, meadows, pastures, disturbed ground; < 1000 m. North Coast, Klamath Ranges, n Central Western California, expected elsewhere;

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Next taxon: Crataegus

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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.