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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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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 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 and varieties, the latter mostly reserved for localized variants within a subsp.
Unabridged references: [Lewis & Ertter 2007 Novon 17:342–353]
Shrub or thicket-forming, generally 8–40 dm. Stem: prickles ± few, generally not paired, 3–10 mm, thick-based and compressed, curved. Leaf: axis glabrous or with hairs to 1 mm, glandless; leaflets generally 5–7, (±) glabrous; terminal leaflet generally 15–40 mm, ± ovate, widest below middle, tip ± acute, margins ± single-toothed, sparsely glandular. Inflorescence: generally 1–5-flowered; pedicels generally 10–20 mm, generally glabrous, glandless. Flower: hypanthium generally 4–5 mm wide at flower, glabrous, glandless, neck 2–3 mm wide; sepals ± glandless, margins with toothed lateral lobes, tip generally ± = body, ± toothed; petals 15–30 mm, white to pale pink; pistils 25–40. Fruit: 10–20 mm wide; ± ellipsoid; sepals reflexed, unevenly deciduous; achenes 4.5–6 mm.
2n=35. Generally ± dry open areas; 100–1500 m. Northwestern California, n Sierra Nevada; to Washington, Idaho, Utah, also eastern United States; native to Eurasia. May–Jul [Online Interchange]
Previous taxon: Rosa californica
Next taxon: Rosa gymnocarpa
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 16 2014
Citation for this treatment: [Author of taxon treatment] 2012. Rosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41633, accessed on Apr 16 2014
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