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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, tree. Leaf: odd-1-pinnately compound [not], petioled, deciduous; leaflets generally toothed, terminal partly fused to uppermost lateral(s) or not. Inflorescence: panicle, many-flowered; pedicel bractlets 0. Flower: hypanthium bractlets 0, stamens generally 20; ovary generally inferior, chambers 1–5, styles 1–5, generally free. Fruit: pome, generally spheric, chambers 1–5, 1–2-seeded.Key to Sorbus
± 130 species: northern temperate, tropical Asia. (Latin: ancient name) Species intergrade.
Unabridged references: [Jones 1939 J Arnold Arbor 20:1–43]
Tree < 15 m; stem-buds not shiny, not sticky, hairs dense, evenly distributed, ± white. Leaf: leaflets 11–17, 3–6 cm, 1.5–2 cm wide, lance-oblong, dull adaxially, axillary hairs ± white. Inflorescence: pedicel hairs dense. Flower: petals 4–5 mm, ± round. Fruit: 8–12 mm, orange to red. Seed: 3–4.5 mm, ovate, ± flat, brown.
2n=34. Disturbed areas near dwellings; < 1900 m. San Bernardino Mountains; widespread in northern North America; native to Eurasia. 1 record, near road, San Bernardino Mountains, 1992; previous San Francisco Bay Area record horticultural. May [Online Interchange]
Previous taxon: Sorbus
Next taxon: Sorbus californica
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 17 2014
Citation for this treatment: [Author of taxon treatment] 2012. Sorbus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44980, accessed on Apr 17 2014
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© 2008 Zoya Akulova
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