Prainea

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Prainea

Description

Trees or climbers, dioecious. Leaves distichous; stipules free, lateral. Inflorescences unisexual, solitary or in pairs in the leaf axils, globose- to obovoid-capitate, pedunculate, with peltate, subpeltate, clavate or spathulate interfloral bracts. stamen 1. ovary free, stigmas 2. seed with the testa absorbed except the thickened saucer-shaped basal portion, endosperm absent, embryo straight, longitudinally aligned, cotyledons equal, appressed faces oblique to median plane of ovary, radicle apical, minute;

Distribution

Asia-Tropical, from the Malay Peninsula to New Guinea present
This Malesian genus comprises two closely related species and ranges from the Malay Peninsula to New Guinea.

Morphology

The flowers and bracts of the pistillate inflorescence are free in contrast to those in the related genera Artocarpus, Hullettia, and Parartocarpus.

In both species, only a small number of the pistillate flowers set fruit. Uncinate hairs are present in P. scandens.

Citation

Kochummen 1978 – In: Tree Fl. Malaya: 165
Hook.f. 1923 – In: Webbia: 563
Ridl. 1924 – In: Fl. Malay Penins.: 358
Corner 1962 – In: Gard. Bull. Singapore 19: 243
Go 2000 – In: Tree Fl. Sabah & Sarawak: 326
F.M. Jarrett 1959 – In: J. Arnold Arbor. 40: 30
C.C. Berg 2005 – In: Blumea: 545
Boerl. 1900 – In: Handl. Fl. Ned. Ind.: 337
Engl. 1897 – In: Engl. & Prantl, Nat. Pflanzenfam. Nachtr. 1: 122
Steenis 1932 – In: Bull. Jard. Bot. Buitenzorg: 259
Becc. 1902: For. Borneo: 635
King 1896: p. 162. – In: Ann. Roy. Bot. Gard. (Calcutta): t. 196