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CUCURBITACEAE GOURD FAMILY

John M. Miller & Robert L. Schlising

Annual, perennial herb; hairs often hard from calcium deposits; generally monoecious. Stem: trailing or climbing, 1–many; tendril generally 1 per node, often branched. Leaf: generally simple, alternate, generally palmate-lobed and -veined, petioled; stipules 0. Inflorescence: at nodes; staminate flowers in racemes, panicles, small clusters, (or 1); pistillate flowers generally 1. Flower: unisexual [bisexual], radial; hypanthium > ovary; calyx generally 5-lobed (or ± 0); corolla rotate to cup- or bell-shaped, generally 5-lobed; stamens 3–5 (or ± 1–3 from fusion), anthers twisted together, often > filaments; ovary ± inferior, chambers 3–5, placentas parietal, styles 1–3, stigmas generally lobed, large. Fruit: berry, drying or not, or capsule, irregularly dehiscent, often gourd- or melon-like. Seed: 1–many.
100 genera, 700 species: especially tropics; some cultivated (Citrullus, watermelon; Cucumis, cucumber; Cucurbita, gourd, pumpkin, squash; Luffa, loofah; Sechium, chayote). [Schaefer et al. 2009 Proc Roy Soc London Ser B, Biol Sci 276:843–851] Several cultivated species included Bryonia dioica reported as waifs in California (Howell 1958 Wasmann J Biol 16:1–157), but none recently. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Unabridged references: [Jeffrey 1990 An outline classification of the Cucurbitaceae, In: Bates, Robinson, and Jeffrey (eds.), Biology and Utilization of the Cucurbitaceae 17:449–463, Cornell Univ Press, Ithaca, NY; Kocyan et al. 2007 Molec Phylogen Evol 44:553–577; Lira, Rodriguez-Jimenez, Alvarado, Rodriguez, Castrejon, Dominguez-Mariani 1998 Acta Bot Mex 42: 43–77; McVaugh 2001 Cucurbitaceae In W.R. Anderson (ed), Flora Novo-Galiciana 3:483–652, Univ Michigan Herbarium, Ann Arbor, Michigan; Schaefer et al. 2008 Syst Bot 33:125–132]

Key to Cucurbitaceae

CUCUMIS CUCUMBER, MELON
Annual. Stem: generally scabrous; tendril unbranched. Leaf: angular to ± palmately lobed; 1° lobes ± entire to irregularly lobed. Inflorescence: staminate flowers 1–several per node; pistillate flowers generally 1, at different nodes. Flower: corolla 2–3 cm wide, rotate or shallowly cup-shaped, yellow, deeply 5-lobed, fused part < 1 cm; anthers 3, free; stigmas 3–5, ± reniform. Fruit: gourd- or melon-like, indehiscent, cylindric to spheric; rind firm, net-veined, prickles 0 or weak; pulp green-white to orange. Seed: many, < 1 cm, ± flat; margin smooth.
± 40 species: Africa, southern Asia. (Greek: cucumber) [Renner et al. 2007 BMC Evol Biol 7:58–69]
Unabridged references: [Schaefer 2007 Blumea 52:165–177; Ghebretinsae et al. 2007 Amer J Bot 94:1256–1266; McVaugh 2001 Cucumis In W.R. Anderson (ed), Flora Novo-Galiciana 3:504–509, Univ Michigan Herbarium, Ann Arbor, Michigan; Kirkbride 1993 Biosystematic Monograph of the Genus Cucumis (Cucurbitaceae), Parkway Publishers, Boone, North Carolina]

Key to Cucumis

Previous taxon: Citrullus lanatus var. citroides
Next taxon: Cucumis melo var. dudaim

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 30 2014
Citation for this treatment: [Author of taxon treatment] 2013. Cucumis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9018, accessed on Sep 30 2014

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