View source for Omphalea

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Omphalea (Greek for naval or center, from the form of the disk or anthers). Euphorbiaceae. Mostly climbing or twining shrubs of the tropics. Juice milky: Lvs. alternate, entire, pinnately veined: fls. in terminal panicles, small, apetalous, monoecious; staminate calyx with 4-5 broad, free, imbricate sepals; stamens 2-3, filaments connate; ovary 3-celled, 1 ovule in each cell: fr. large, fleshy outside.—Twelve species in Trop. Amer. and 3 in the Old World tropics. Related to Sapium und Stillingia. Cult. in rich light soil; prop, by cuttings rooted with heat. O. triandra, Linn., Cob-Nut, Pop- Nut, Pig-nut, with oblong obtuse Lvs. and yellow fr. 1½ in. thick, has been cult, in Eu. The blackening juice of the fr. has been used in ink and the nuts eaten after removal of the poisonous embryo. W. Indies. L.B.C. 6:519. O. megacarpa, Hemsl., with lanceolate, acute Lvs., is native and cult, in the W. Indies, the large seeds, Hunter's-nut, being eaten as a nutrient and stimulant. H.I. 2537. O. diandra, Linn., with broad ovate or oblong Lvs., or a related species, has been intro. from the mountains of Colombia, where the oily seed is eaten and fed to hogs.
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