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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, open or thicket-forming, generally 5–30 dm. Stem: prickles paired or not, generally ± straight (± curved) (in California). Leaf: axis finely velvety (glabrous), hairs ± 0.1 mm, glandless; leaflets 5–7, (±) glabrous; terminal leaflet 10–40 mm, ± obovate-elliptic, widest at or above middle, tip ± obtuse, margins single-toothed, glandless. Inflorescence: 1–12-flowered; pedicels generally 10–20 mm, ± glabrous, glandless. Flower: hypanthium generally 3–5 mm wide at flower, glabrous, glandless, neck 2–4 mm wide; sepals glandless (in California), generally entire (or with simple, linear lobes), tip ± = body, entire; petals generally 15–20 mm, pink; pistils generally 20–35. Fruit: generally 9–12 mm wide; sepals generally erect, persistent; achenes 3–4 mm. Yosemite Valley plants ambiguous. [Online Interchange]
Unabridged note: Rosa woodsii var. woodsii in central United States. Rosa woodsii subsp. puberulenta (Rydb.) W.H. Lewis & Ertter (open habit, long curved prickles), Rosa woodsii subsp. arizonica (Rydb.) W.H. Lewis & Ertter (glandular sepals, short curved prickles) possibly entering California from east.
Stem: openly branched; prickles few to many with internodal prickles generally 0 in inflorescence, 2–7 mm, slender. Flower: 1–12. Fruit: generally ± ovoid.
2n=14. Generally ± moist areas; 1000–2500 m. High Cascade Range, n High Sierra Nevada, Modoc Plateau, n East of Sierra Nevada; to British Columbia, Montana, Nevada. [Rosa woodsii var. ultramontana (S. Watson) Jeps.] Most High Cascade Range reports referable to Rosa pisocarpa subsp. ahartii. May–Jul [Online Interchange]
Unabridged note: The author has indicated that these probably are misidentified specimens of Rosa californica.
Previous taxon: Rosa woodsii subsp. gratissima
Next taxon: Rubus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 31 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=52679, accessed on Jul 31 2014
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