Tetrameranthus duckei (Westra, Lubbert Y.T. & Maas, Paul J. M. 2012)
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Genus: Tetrameranthus
Name
Tetrameranthus duckei Westra, Lubbert Y.T., 2012 – Wikispecies link – Pensoft Profile
- Tetrameranthus duckei Westra, Lubbert Y.T., 2012, PhytoKeys 12: 5-7.
Description
Description. Shrub or tree, 3-12 m tall, 4-8 cm diam., young twigs and petioles densely to rather densely covered with brown, stellate hairs>0.5 mm long, becoming glabrous. Leaves: petioles 10-40 mm long, 1.5-4 mm diam.; lamina narrowly elliptic to narrowly obovate, 10-25 by 3-10 cm (index 2.7-4), chartaceous to coriaceous, dull or slightly shiny brown or greenish brown above, dull brown or greenish brown below in sicco, rather densely covered with stellate hairs on primary vein, otherwise glabrous above, rather densely to sparsely covered with stellate hairs on primary vein and secondary veins, otherwise mostly glabrous below, the stellate hairs similar to those on branchlets, base acute, apex acuminate (acumen 5-25 mm long), primary vein impressed above, secondary veins 8-12 on either side of primary vein, impressed above, loop-forming, shortest distance between loops and margin 1.5-5 mm, or not loop-forming in basal part, tertiary veins slightly raised, flat, or indistinct above, percurrent to reticulate. Inflorescences 1(-2)-flowered, peduncles 5-15 mm long, c. 1.5 mm diam., fruiting peduncles to c. 3 mm diam., bracts 4, narrowly triangular, 3-6 mm long, soon falling after flowering, pedicels 10-25 mm long, c. 1.5 mm diam., fruiting pedicels to c. 40 mm long, 3 mm diam., peduncles and pedicels densely covered with stellate hairs, becoming glabrous. Flowers green, turning yellow in vivo; sepals elliptic to obovate, free, 5-7 mm long, outer side densely covered with stellate hairs; outer petals ovate, 20-25 by 9-12 mm, inner base with fleshy and longitudinally grooved callus 5-6 mm long and extending across the whole width, inner petals narrowly ovate to ovate, 15-22 by 6-9 mm, with similar callus to c. 8 mm long, outer side of petals densely covered with stellate hairs, the callus on the inner side glabrous; stamens 2-2.5 mm long, connective shield conical or acuminate, 1-1.5 mm long, more or less curved toward the center. Monocarps 1-6, green or shiny green, turning green-yellow in vivo, brown to dark brown in sicco, ellipsoid or oblongoid to narrowly so, 25-65 by c. 20(-25) mm, with (2-seeded forms) or without oblique constriction, apex a thick obtuse beak 2.5-10 mm long. Seeds 1-2 per monocarp, to c. 35 by c. 20 mm.
Distribution
Distribution. Amazonian regions of Venezuela (Amazonas), Colombia (Guainia), and Brazil (Amazonas, most common in Manaus and vicinity).
Taxon Treatment
- Westra, Lubbert Y.T.; Maas, Paul J. M.; 2012: Tetrameranthus (Annonaceae) revisited including a new species, PhytoKeys 12: 5-7. doi
This treatment was originally uploaded by Plazi, compare this treatment on Plazi. Unless this treatment has been substantially changed on Species-ID, Plazi requests to maintain a link back to the original repository.
