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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 tree, thorny or not. Leaf: simple, generally toothed (lobed). Inflorescence: few-flowered, ± umbel-like cluster; pedicel bractlets 0 or 1, deciduous. Flower: hypanthium bractlets 0; stamens many; ovary inferior, chambers (2)5, 2-ovuled, styles (2)5, ± fused at base. Fruit: pome, ± spheric, flesh not gritty.Key to Malus
25–50 species: northern temperate. (Classical name of apple)
Tree. Leaf: 5–11 cm, elliptic to widely ovate; petiole 10–40 mm. Flower: petals white or pink. Fruit: pedicel 10–25 mm.
2n=34,51. Disturbed places; < 2080 m. California Floristic Province; native to Eurasia. [Malus sylvestris Mill., misappl.] Apr–May [Online Interchange]
Unabridged synonyms: [Malus domestica Borkh.; Malus pumila var. domestica (Borkh.) C.K. Schneid.; Malus sylvestris Mill., misappl.; Pyrus malus L.]
Unabridged note: TROPICOS & IPNI label Malus domestica Borkh. (Theoretisches-praktisches Handbuch der Forstbotanik und Forsttechnologie 2: 1272–1276. 1803) as illegitimate, superfluous for M. communis Desf. The work isn't readily available at UCB so has not been checked. If Malus domestica is in fact illegitimate, then the correct citation would be Malus pumila Mill. var. domestica C.K. Schneid. A proposal to conserve the name Malus domestica against Malus pumila, Malus communis, Malus frutescens, and Pyrus dioica has been published in Taxon 59(2):650–652 (April, 2010).
Previous taxon: Malus fusca
Next taxon: Neviusia
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 18 2014
Citation for this treatment: [Author of taxon treatment] 2012. Malus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=32587, accessed on Apr 18 2014
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