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Declieuxia deltoidea Müll.Arg.식물/들꽃-꼭두서니과(Rubiaceae) 2024. 10. 18. 11:35
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Declieuxia deltoidea Müll.Arg.
First published in Flora 59: 437 (1876)This species is acceptedThe native range of this species is Brazil (Minas Gerais). It is a subshrub or shrub and grows primarily in the seasonally dry tropical biome.Shrub or subshrub cane-like, often glaucous, 40-200 cm tall, the branches terete, glabrous, the internodes (1-)2-5 cm long. Stipules unidentate or 6-7-dentate, the lobes narrowly to broadly triangular, narrowly acute and glandular at apex, 0.2-1 x 0.2-0.5 mm, glabrous, not decurrent. Leaves opposite, sessile, rarely connate-perfoliate below the stipules, glabrous; blade coriaceous, very broadly ovate to depressed ovate, abruptly acuminate at apex, strongly cordate at base, (1.3-)2-4.9 X (1.4-)2.2-6.2 cm, 0.6-0.97 times longer than wide, venation pinnate with several basal laterals and others joining the midrib, with (5-)8-10 arcuate anastomosing lateral veins on each side, the midrib prominulous to plane above and prominent beneath, the lateral veins subprominulous to weakly sulcate above and prominent to prominulous beneath, the tertiary venation closed reticulate. Inflorescences terminal or axillary modified cymes or compound dichasia or rarely terminal cylindrical thyrses formed by foliar reduction, pedunculate, 1.4-5(-13.5) x 0.5-3(-5) cm, with 7-200(-800) flowers, with 2-12(-84) axes, the axes terete, 2-40 mm long, glabrous or very rarely glabrate to sparsely puberulous; peduncle terete, 2-34 mm long, glabrous or very rarely glabrate to sparsely puberulous, with 2 bracts at apex, bracts narrowly elliptic or narrowly ovate, narrowly acute at apex, 2-10 x 0.8-2.5 mm, glabrous. Flowers heterostylous, dichasial bracts narrowly triangular or narrowly oblong, narrowly acute at apex, 1.5-3 x 0.4-0.6 mm, glabrous, subpedicellate with the pedicels terete, 0.1-0.5 mm long, glabrous; hypanthium depressed obovate in outline, 0.5-0.8 x 0.9-1.1 mm, glabrous or very rarely densely papillate; calyx lobes deltoid to triangular or oblong to narrowly so, acute to narrowly so at apex, 0.1-0.7 x 0.1-0.4 mm, glabrous, corolla blue, salverform, the tube 4.8-7 mm long, orifice 1.2-1.5 mm in diam, 0.7-0.9 mm at base, exterior glabrous, the lobes triangular or ovate, acute to narrowly so at apex, 1.5-2.4 x 0.9-1.5 mm, glabrous outside; stamens with the filaments 0.2-0.4 or 1.1-1.8 mm long, glabrous, the anthers 1.1-1.4 mm long, glabrous; style 4.1 -4.4 or 5.3-7 mm long, glabrous. Fruit with the emargination 0.4-1.8 mm, subpedicellate, the pedicel 0.2-0.5 mm long, glabrous, the mericarps elliptic to circular in outline, 1.6-3 x 1.1-2 mm, 0.5-0.6 mm thick, glabrous or very rarely sparsely papillate.
- Provided by: [B].Memoirs of the New York Botanical Garden
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Habit
Declieuxia deltoidea Müll.Arg. (worldfloraonline.org)
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