Brachytome Hook.F.

Genus

Angiosperms > Gentianales > Rubiaceae

Characteristics

Shrubs or small trees, dioecious or perhaps polygamo-dioecious, unarmed, often with some internodes reduced. Raphides absent. Leaves opposite or often appearing ternate due to reduced internodes and marked anisophylly grouping 2 leaves at 1 node plus a single leaf at another node, apparently without domatia; stipules persistent or deciduous after terminal 2-4 nodes, interpetiolar or shortly united around stem, triangular. Inflorescences pseudoaxillary, usually borne opposite a single leaf of an anisophyllous pair and appearing leaf-opposed or sometimes just above an undeveloped internode at an apparent 3-leaved node, cymose, few to several flowered, subsessile to pedunculate, bracteate. Flowers subsessile to pedicellate, unisexual or perhaps sometimes bisexual. Calyx limb cupular, 5-lobed or-dentate. Corolla white to cream or pale yellow, funnelform to tubular or subrotate, glabrous inside; lobes 5, convolute in bud. Stamens 5, inserted in corolla throat, exserted, with staminodes included; filaments short; anthers dorsifixed. Ovary 2-celled, ovules many in each cell on peltate axile placentas; stigma 2-lobed, grooved striate, partially exserted. Fruit red to orange, baccate, fleshy, globose to ellipsoid, smooth, with calyx limb persistent, often with fruit base and/or pedicels elongating into stipes; seeds numerous, small, cuneate to flattened, with testa reticulate; endosperm fleshy; embryo small, subterete.
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Foliage retention deciduous
Sexuality hermaphrodite
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Hardiness (USDA) 8-12

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