Swartzia ulei Harms
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Authority
Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)
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Family
Fabaceae
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Scientific Name
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Type
Type collection. E. Ule 5071 (lectotype K; isolectotypes F, G, MG), Manáos, Rio Negro, Amazonas, Brazil, Feb. 1901. The holotype at Berlin was destroyed in the fire during World War II, thus necessitating the choice of a lectotype.
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Description
Description - Tree 12-30 m tall, the branchlets rusty-velutinous; stipules minute, triangular, ca 0.8 mm long and wide, velutinous externally, strigulose within; petioles 7.5-10 cm long, terete, velutinous, the rachis 11.5-24.5 cm long, rusty-velutinous, terete to slightly canaliculate above; leaflets 3- or 4-jugate, the petiolules 7-15 mm long, velutinous, the blades of the lower two pairs of leaflets smaller, 10-14.5 cm long, 5.5-7 cm wide, the others 14.5-21 (-26.5) cm long, 6.5-9.5(-11) cm wide, all the blades coriaceous, elliptic-ovate to oblong-ovate to elliptic-oblong, the base rounded sometimes cordate, the apex acuminate or long-acuminate or acute, glabrous and nitid on the upper surface, densely rusty-velutinous beneath, the hairs mostly simple but with a layer of much shorter, partly peltate hairlets, the venation obscure to subobscure, the costa impressed on the upper surface, the primary veins plane, the costa and primaries more or less salient beneath; inflorescence a terminal panicle of racemes, 15-40 cm long, the axes densely rusty-velutinous, the bracts deciduous, narrowly triangular or ovate, 1-2 mm long, 1 mm wide, densely strigulose externally, glabrous within; bracteoles lacking but a relictual tuft of hairs sometimes present at the pedicel apex; pedicels stout, 8-12 mm long, densely velutinous; buds globose to oval in outline, 6-7 mm diameter, 7-9 mm long; calyx segments 4, persistent with the fruit, densely rusty-velutinous externally, white-villose on the inner surface; petal white, more or less obovate, often incompletely developed, glabrous, the claw 1.5-2.5 mm long, the blade 4-10.5 mm long; larger stamens 2 or 3, glabrous, the filaments 6.5-10 mm long, the smaller stamens glabrous, ca 8 mm long, the anthers oblate, less than 1 mm long, the pollen of all the stamens globose, ca 26 µ diameter; gynoecium densely villose-sericeous, the stigma punctiform, the style 0.8-1.5 mm long, the ovary 3.5-4.5 mm long, 2-3 mm wide, elliptic to oval, the gynophore 3-5 mm long; fruit oblong in outline, oval in cross-section, 6.5-8 cm long, 3-3.5 cm wide, densely rusty-velutinous, verruculose, the stipe 9-10 mm long.
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Discussion
There are many morphological characteristics in common between this species and S. tomentijera- shape of leaflets, vestiture, calyx segments more or less pubescent on the inner surface, etc. Although the lower surface of the leaflets is very similar in color and texture in the two species, the hairs of S. tomentijera are all peltate while only very few such hairs are found in the predominantly simplehaired indumentum on the leaflets of S. ulei. The differences separating these species are largely quantitative, S. ulei being larger in most respects.
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Common Names
Ginnum
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Distribution
(Fig. 13). Non-inundated, primary forest on sandy soils in the vicinity of Manáos, Brazil.
Brazil South America| Amazonas Brazil South America|