Tetrameranthus laomae (Westra, Lubbert Y.T. & Maas, Paul J. M. 2012)
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Genus: Tetrameranthus
Name
Tetrameranthus laomae Westra, Lubbert Y.T., 2012 – Wikispecies link – Pensoft Profile
- Tetrameranthus laomae Westra, Lubbert Y.T., 2012, PhytoKeys 12: 10-11.
Description
Description. Tree, 7-35 m tall, 11-45 cm diam., young twigs and petioles densely covered with whitish, stellate hairs <0.2 mm long, becoming glabrous. Leaves: petioles 10-20 mm long, 1-1.5 mm diam.; lamina obovate to narrowly obovate or narrowly elliptic-obovate, 6-24 by 2-7 cm (index 2.4-3.7), chartaceous to thinly coriaceous, shiny to dull greenish brown above, dull greenish brown below in sicco, rather densely to sparsely covered with stellate hairs <0.2 mm long on primary vein, otherwise sparsely so to glabrous on both sides, base attenuate, decurrent along petiole, apex acute or acuminate (acumen (0-)7-20 mm long), primary vein raised to almost flat above, secondary veins 7-10 on either side of primary vein, more or less raised above, loop-forming, shortest distance between loops and margin 2-4 mm, or not loop-forming in basal part, tertiary veins raised above, reticulate and often tending to form intersecondaries. Inflorescences 1-flowered, peduncles 0-1 mm long, bracts 3, narrowly triangular or narrowly oblong, 1-2.5 mm long, soon falling after flowering, pedicels 7-15 mm long, 1-1.5 mm diam., fruiting pedicels to c. 20 mm long, 2.5-4 mm diam., densely to rather densely covered with stellate hairs, becoming glabrous. Flowers green to yellowish, green with yellow center, or yellow in vivo; sepals broadly elliptic to broadly ovate, 2.5-3 by 2-2.5 mm, outer side densely covered with stellate hairs; outer petals ovate-elliptic, 10-16 by 5-8 mm, inner petals narrowly elliptic, 8-11 by 3-4 mm, outer side of petals rather densely covered with stellate hairs, the inner base glabrous; stamens c. 1 mm long, connective shield cushion-shaped, flat. Monocarps 4-13, green, maturing orange or red in vivo, black in sicco, ellipsoid to oblongoid, 2-seeded forms 30-45 by 15-<20 mm and with oblique constriction, 1-seeded forms smaller and without constriction, apex mostly rounded. Seeds 1-2 per monocarp, to c. 25 by 20 mm.
Distribution
Distribution. Amazonian Peru (Loreto, Pasco) and Brazil (Acre, Amazonas, Para), and the Colombian states of Amazonas and Choco.
Taxon Treatment
- Westra, Lubbert Y.T.; Maas, Paul J. M.; 2012: Tetrameranthus (Annonaceae) revisited including a new species, PhytoKeys 12: 10-11. doi
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