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FOC | Family List | FOC Vol. 13 | Melastomataceae

5. Oxyspora Candolle, Prodr. 3: 123. 1828.

尖子木属 jian zi mu shu

Shrubs. Stems 4-sided or obtusely 4-sided, channeled. Leaves petiolate; leaf blade stiffly papery to sometimes membranous, secondary veins 2 or 3 on each side of midvein, margin denticulate. Inflorescences terminal, a cymose panicle, with 2(or 3) leaflike bracts at base. Bractlets and bracteoles very small, caducous. Flower 4-merous. Hypanthium narrowly funnelform, 8-veined. Calyx lobes shortly and broadly triangular or shortly triangular-ovate, apex acute and apiculate. Petals pink, red, or dark red, ovate, apex apiculate and puberulous. Stamens 8, whorls unequal in length. Longer stamens purple; connective swollen and usually not extended at base into a spur. Shorter stamens yellow; connective usually extended at base into a short spur. Ovary inferior, 4-celled, glabrous. Capsule obovoid or ovoid, 4-poricidal; hypanthium narrowly funnelform, apically contracted, 8-ribbed. Seeds numerous, small, triangular-lanceolate, angular.

Number of species unclear: Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand, Vietnam; four species (one endemic) in China.

The number of species in Oxyspora is unclear because of problems with the separation from Allomorphia (see comment under that genus above).

1 Leaf blade abaxially glabrous   (2)
+ Leaf blade abaxially furfuraceous stellate or furfuraceous squamose at least on veins   (3)
2 (1) Leaf blade 6-13 × 2.5-4.2 cm; inflorescences 10-20 cm.   2 O. yunnanensis
+ Leaf blade 15-32 × 5-12 cm; inflorescences 20-40 cm.   4 O. cernua
3 (1) Inflorescences 20-30 cm, more than 10 cm wide.   1 O. paniculata
+ Inflorescences 12-25 × 2.6-6 cm.   3 O. vagans

Lower Taxa


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