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(Last Modified On 3/7/2013)
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(Last Modified On 3/7/2013)
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Genus
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HEMIANGIUM A. C. Smith
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PlaceOfPublication
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Brittonia 3: 411. 1940.
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Description
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Lianas or erect, woody plants, the branches stout, terete, glabrous, the branch- lets opposite, sparsely lenticellate. Leaves generally opposite, petiolate. Inflores- cences axillary or rarely crowded in groups of 4-6 at the apex of short, leafless branchlets, pedunculate, paniculate or pseudocymose. Flowers hermaphrodite, rather large for the family, pedicellate, loosely arranged, usually solitary at the apex of ultimate branchlets; sepals 5; petals 5, suberect or spreading, glabrous; disc continu- ous, annular-pulvinate, conspicuous, slightly narrowed and entire at the margin, thick-carnose, glabrous; stamens 3, suberect or spreading, the filaments ligulate, conspicuously broadened and nearly contiguous at the base, the anthers transversely ellipsoid, the thecae laterally confluent, dehiscing by apical, transversal, confluent clefts; ovary more or less immersed in the disc, depressed-3-lobed, 3-celled, the cells 6- to 8-ovulate, the ovules 2-seriate; style subulate, the stigmas obscure. Fruits few per inflorescence, of 3 capsular mericarps, these spreading, connate at the basal margins, slightly convex on both surfaces, emarginate at the apex, bluntly carinate and dehiscing along a median suture, the pericarp coriaceous; seeds 6-8 par meri- carp, affixed by a basal wing, the embryoniferous portion coriaceous, the wing mem- branous.
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Habit
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Lianas
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Distribution
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A monotypic, neotropical genus.
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