Uncaria

Schreb.
Description: 
Woody lianes or sometimes forming scrambling bushes or thickets; young stems +/- quadrangular; flowering branches bearing strongly curved hooked spines. Leaves paired, petiolate, elliptic, apex acuminate; stipules simple or 2-lobed, deciduous. Inflorescences globose, solitary, axillary or terminal. Flowers not fused, pedicellate. Calyx: tube ellipsoid, free part well-developed, shallowly 5-undulate to distinctly 5-toothed, persistent. Corolla: tube filiform-cylindrical, funnel-shaped at throat; lobes 5, imbricate or quincuncial. Stamens: filaments very short; anthers apiculate, 2-thecous. Ovary 2-locular; placentas peltate, entirely covered with imbricated ascending ovules; style long and narrow, well exserted from corolla; stigma slightly thickened with 2 marks on either side. Fruits fusiform, dry, dehiscent, borne on accrescent pedicels. Seeds small, with long fine wings from opposite ends, mostly 1 from one end and 2 or 3 from the other.
Distribution: 
Species 34, tropics, mainly Asia and Indonesia; sthn trop. Afr. 1: Uncaria africana G.Don, Angola.
Source: 
SSTA
Synonym(s): 
Ourouparia Aubl.; Hiern: 435 (1898).
Classification: 

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith