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Genus Pisonia Family Nyctaginaceae

Description: Trees or shrubs without spines or woody climbers with spines.

Leaves opposite, alternate or clustered at end of branches.

Inflorescence usually a much-branched terminal cyme. Flowers bisexual or unisexual and then the plants mostly dioecious. Perianth in female flowers contracted above the ovary, 5-toothed; in male flowers bell-shaped. Stamens 6–14 [2–20].

Anthocarp often glandular, topped by withered upper portion of the perianth.


Distribution and occurrence: World: c. 45 species, tropical & subtropical regions, especially America & South-East Asia. Australia: 3 species, Qld, N.S.W., N.T., W.A.

Text by S. W. L. Jacobs & G. J. Harden
Taxon concept:

Taxa not yet included in identification key
Pisonia brunoniana

 Key to the species 
1Woody climber or scrambling shrub with axillary spines on abortive peduncles; fruit covered with stiff, hooked glandular hairsPisonia aculeata
Erect shrub or small tree without spines; fruit viscid along ribs but without glandular hairsPisonia umbellifera

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