Brachyotum quinquenerve (Ruiz & Pav.) Triana
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Authority
Wurdack, John J. 1953. A revision of the genus Brachyotum (Tibouchineae-Melastomataceae). Mem. New York Bot. Gard. 8 (4): 343-407.
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Family
Melastomataceae
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Scientific Name
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Description
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Species Description - Trichomes moderately but minutely roughened to smooth. Branchlets roundedquadrangular, moderately strigulose to short-strigose. Petiole (4-)10-20 or 2-6(-9) mm. Blade 23-80 or 10-20(-35) x 12-40 or 6-12(-20) mm., ovate or lanceolate to elliptic, the apex acute, and the base obtuse to truncate, with 5 or sometimes 7 primaries and usually an additional pair of marginals, the primaries narrowly impressed above and elevated below, the secondaries mostly obscure above and elevated and laxly reticulate below; the 3 central primaries more or less prolonged below the base of the blade and forming a small triangular extension of the blade proper, the second laterals departing from and 2-7 mm. above the base of the first laterals, the third laterals (when present) also departing from and 1-5 mm. above the base of the first laterals, the fourth laterals (marginals, when present) also from and 1-3 mm. above the base of the first laterals; above moderately strigose or strigulose, the hairs 3-5(-10)/mm.2 with the basal 1/3-1/2 adherent and usually not greatly nor abruptly expanded; below moderately strigulose to looseshort-strigose, the hairs (7-)10-12(-20)/mm.2, the glands solitary and usually 10-15/mm. Flowers constantly 4-merous, in 3-many-flowered panicles which are terminal on lateral branches or in upper leaf axils, the inflorescence branches subtended by a gradually smaller series of bracts, the ultimate pedicels grouped in 2-3-flowered dichasia. Pedicel 0-3 mm. below pedicellar bracteoles, 1-6 mm. above; pedicellar bracteoles 3.5-8 x 0.2-1.7 mm., linear, above glabrous, below moderately strigulose, mostly caducous just before anthesis, in crowded inflorescences sometimes absent. Hypanthium (3-)4-5(-6) x (2.5-)3.5-4.5 mm., 0.2-0.3 mm. thick medianly, moderately long-strigulose to short-strigose, the hairs (7-)10-13(-18)/mm.2 Sepals 5-10 x 3-4 mm., lanceolate and contracted about 0.5-1 mm. above the sinuses to 1-2 mm. wide, the apices narrowly acute, united at bases 0.9-1.2 mm., usually with 1-few sinusal setae well-developed. Petals deep purple or deep blue, (10-)12-14(-15) x (7-)8-10(-11) mm., rhombic-obovate and slightly asymmetrical, the apices acute, the gland-tipped cilia 0.1-0.4 mm. (the terminal few 0.5-2 mm.). Filaments 3-5.5 mm.; anthers 3-5.5 mm.; connective at anther base 0.7-1.1 mm., free of the anther 0.3-0.6 mm., the ventral lobing 0.1-0.4 mm., and often with minute apiculi on each lobe. Style 18-26 x 0.3-0.5 mm., exserted 6-14 mm. Ovary 3-6 x 2-3.5 mm., moderately to densely strigulose on the apical l-2.5(-3.5) mm., the apical lobes 0.5-0.8(-1.2) mm. above the Iocules.