Rubovietnamia Tirveng.

Genus

Angiosperms > Gentianales > Rubiaceae

Characteristics

Shrubs, unarmed, sometimes with some internodes markedly shortened. Raphides absent. Leaves opposite, sometimes appearing ternate due to reduced internode and marked anisophylly grouping 2 leaves at one node plus an apparently solitary leaf at another node, usually with domatia, at apex sometimes aristate; stipules caducous to late deciduous, shortly united around stem, triangular, inside (i.e., adaxially) pubescent, sometimes aristate. Inflorescences terminal and/or pseudoaxillary, cymose and 2-8-flowered or sometimes reduced to 1 flower, pedunculate, bracteate with bracts often stipuliform. Flowers pedunculate or pedicellate, bisexual, monomorphic. Calyx limb deeply 5-lobed; lobes sometimes imbricate in bud. Corolla white turning yellow with age, salverform to funnelform, inside glabrous except with a pilosulous ring near base; lobes 5, convolute in bud. Stamens 5, inserted near corolla throat, partially exserted; filaments reduced; anthers dorsifixed near base, becoming twisted with age, shortly sagittate at base, with connective prolonged in an apical triangular appendage. Ovary 1-celled, ovules 2-4 on parietal placentas; stigmas 2, spatulate, partially exserted. Fruit baccate, fleshy to leathery, subglobose, smooth, mature color unknown, with calyx limb tardily deciduous; seeds few to several, medium-sized, ovoid to subglobose, smooth; endosperm abundant; embryo minute, basal, nail-shaped; radicle slightly longer than cotyledons; cotyledons suborbicular.
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Growth form shrub
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Foliage retention deciduous
Sexuality hermaphrodite
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Hardiness (USDA) 8-12

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Cultivation

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Distribution

Rubovietnamia world distribution map, present in China, Philippines, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:1004952-1
WFO ID wfo-4000033579
COL ID 8W383
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Rubovietnamia

Lower taxons

Rubovietnamia nonggangensis Rubovietnamia coronula Rubovietnamia sericantha