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Trees or shrubs without spines, dioecious or monoecious. Inflorescences bisexual or unisexual. Tepals 5; stamens 5 and opposite the tepals; stigmas unbranched. Fruit up to 3 mm long.


Guianas present, Neotropics present, tropics, extending to subtropical regions present
In the tropics, extending to subtropical regions, approx. 10 species; in the Neotropics 2 species; in the Guianas one species.

Wood observation species

T. micrantha


Vessels diffuse, solitary (20-30%) and radial chains of 3-7, occasionally also irregular clusters of 2-5, oval, 6-8 per sq. mm, diameter 120-135 μm. Vessel-member length: 530 μm. Perforations simple. Intervascular pits alternate, polygonal, 8-10 μm. Vessel-ray and vessel-parenchyma pits larger, irregularly shaped, sometimes almost scalariform, haltbordered, the borders often reduced. Thin-walled tyloses common.
Rays uniserate and 2-(3)-seriate, 8-9 per mm, up to 1000 μm high. Heterogeneous, composed of square and upright cells, and few procumbent cells.
Parenchyma very scarce, scanty vasicentric. Strands of 2-5 cells.
Fibres non-septate, lumen 24-30 μm, walls 1-2 μm. Pits simple, very small, confined to the radial walls, apertures sometimes crossed. Length: 900 μm. F/V ratio: 1.7.