Swartzia ingifolia Ducke
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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. A. Ducke 94 (holotype Y; isotypes A, F, NY), Manáos, Amazonas, Brazil, June 1932.
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Description
Description - Tree 25-30 m tall, the branchlets minutely strigulose at the tips but soon glabrescent; stipules caducous, 5-5.5 mm long, ca 1.5 mm wide, lanceolate, acute, puberulous externally, glabrous within; petioles canaliculate, stipellate apically, 12-35 mm long, minutely strigulose, the rachis canaliculate to marginate to shortly alate apically, stipellate at each leaflet pair, 7-16 mm long, minutely strigulose except on the wing; leaflets ovate (the lowermost pairs) to ovate- or lanceolate-elliptic to elliptic, 3- or 4-jugate, the petiolules 1.5-3.5 mm long, minutely strigulose, the blades of the lower pair smaller, 4-7 cm long, 2-3.5 cm wide, the blades of the other leaflets 7-15.5 cm long, 3-5.5 cm wide, all the leaflets rounded, sometimes cordately so, at the base, the apex acute to long-acuminate, the tips blunt, the costa velutinous on the upper surface, glabrous to slightly puberulous beneath, the costa and primary veins plane to impressed on the upper surface, salient beneath; inflorescence racemose or paniculate-racemose, ramigerous, 8.5-23 cm long, the axis minutely sparingly to densely aureo-strigulose, the bracts deciduous, broadly triangular-ovate 1.5-2 mm long, 1.5-2.5 mm wide, externally minutely aureo-strigulose glabrous within, the bracteoles persistent, arising at the pedicel apex, lanceolate, acute, 1-1.5 mm long, minutely strigulose externally, glabrous within; pedicels clavate, 12-20(-35) mm long, conspicuously verruculose, densely minutely strigulose; buds globose, 10 mm diameter, verruculose, minutely densely strigulose; calyx segments 4, persistent, thick, rigid rather woody, elliptic, minutely strigulose and verruculose externally, glabrous and verruculose within; petal yellow to pale yellow, the claw 4-6 mm long, sericeous externally, the blade oblate, ca 18 mm long and 24 mm wide, sericeous externally, glabrous within; larger stamens 10-20, the filaments ca 18 mm long, glabrous, the anthers 1.7-2 mm long, 0.8 mm wide, oval-oblong, glabrous; smaller stamens glabrous, the filaments 10-15(-20) mm long, the anthers 1-2 mm long, 0.7 mm wide, oblong; gynoecium compound, 2 or 3 complete pistils formed in each flower, the stigmas capitellate, the styles ca 5 mm long, the ovaries minutely sericeous, falcate-linear, ca 15 mm long and 1.5 mm wide, the gynophores 9 mm long, minutely sericeous; mature fruit not seen.
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Discussion
There is only one possible close relative of S. ingifolia-S. laxiflora. Both species are related to the S. laurifolia assemblage which differs, among other characteristics, by the relative dimensions of the style and ovary. In the S. laurifolia complex the style is 6-10 times as long as the ovary, rather than ca 3 times as in S. ingifolia and its relatives. From S. laxiflora the present species differs by the glabrous undersurfaces of its leaflets which usually occur in fewer pairs.
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Common Names
Carrapatinho, coracção de negro
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Distribution
(Fig. 3). Primary, non-inundated forest on sandy soils in the middle Amazon Valley, mostly near Manáos.
Brazil South America| Amazonas Brazil South America|