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Flora of the Venezuelan Guayana

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ANNONACEAE

15. TETRAMERANTHUS R.E. Fr., Acta Horti Berg. 12: 554, fig. 41. 1939.

by Julian A. Steyermark

Shrubs or trees, stems pubescent to glabrous. Leaves spirally arranged, often crowded at the end of the branchlets. Indument of both vegetative and inflorescence parts of stellate tufts of hairs. Inflorescence axillary, 1-flowered or umbellately several-flowered; pedicels articulate in the lower half at or above the base with usually 4 (or fewer) narrow bracts just below the articulation. Flowers medium-sized, bisexual; receptacle convex. Sepals (3)4, imbricate; petals (6)8, imbricate, the inner petals usually somewhat smaller and narrower. Stamens numerous; anther with a conical prolongation of the connective, not locellate. Carpels numerous or few, free, the ovaries pilose with a depressed, sessile stigma; ovules 2, lateral. Monocarps free, subelliptic to suboblong, stipitate or sessile, 1- or 2-seeded, thick-walled, indehiscent.

Amazon basin in Colombia, Venezuela, Ecuador, Peru, and Brazil; 6 species, 1 in Venezuela.

Tetrameranthus duckei R.E. Fr., Acta Horti Berg. 12: 557, fig. 41. 1939. ---Majagua.

Tree 3--8 m; flowers greenish; fruiting carpels yellow-green with constricted areas, 4.5--7 cm long, 1- or 2-seeded. Low forests on white sand, ca. 100 m; Amazonas (Río Pasimoni, near San Carlos de Río Negro). Amazonian Colombia and Brazil. Fig. 386.

Scientific Comments:
Paul Berry (peberry@facstaff.wisc.edu) or Kay Yatskievych (kay.yatskievych@mobot.org).

 
 
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