(Last Modified On 5/8/2013)
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(Last Modified On 5/8/2013)
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Genus
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Stylogyne A. DC.
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PlaceOfPublication
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Ann. Sci. Nat. Bot., Ser. 2. 16: 78. 1841.
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Description
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Shrubs or trees, glabrous or nearly so. Leaves alternate, petiolate. Inflo- rescences paniculate, terminal or axillary. Flowers unisexual or bisexual, small, umbellate or subcorymbose, pedicellate, usually white, (4-)5-merous; sepals dextrorsely contorted in bud, free or short-connate basally, punctate or lineate; petals short-connate basally, dextrorsely contorted in bud, commonly lineate; stamens usually shorter than the petals, the filaments slender, the anthers elongate, subsagittate basally, dorsifixed or basifixed, usually dehiscent by introrse slits; ovary ovoid in carpellate flowers, with the slender style sub- equaling or exceeding the stamens, abortive in staminate flowers, with the short style less than 1 mm long; placenta with 3-5 uniseriate ovules. Fruit drupaceous, 1-seeded, the endocarp crustaceous or osseous; seed globose or depressed, the endosperm corneous, excavate, not ruminate, the embryo trans- verse, elongate.
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Distribution
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A difficult genus of perhaps 60 dioecious species in tropical America, ranging from Mexico and the West Indies into South America, where it is most abundantly represented.
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Key
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a. Leaves membranaceous, strongly-veined, sub-bullate above, the primary lateral nerves 11-15 pairs, prominent and sharply reticulate beneath; branchlets minutely puberulent .......... 1. S. hayesii aa. Leaves chartaceous to subcoriaceous, the veins slender and inconspicuous; branchlets glabrous. b. Inflorescences terminal; leaves elliptic or obovate-elliptic; stamens included, shorter than the petals ............. 2. . S. turbaceusis bb. Inflorescences axillary; leaves lanceolate, lanceolate-oblong, or rarely oblanceolate; stamens exserted, to 6 mm long, longer than the petals ...... 3. S. standleyi
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