Swartzia corrugata Benth.

Authority

Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)

Family

Fabaceae

Scientific Name

Swartzia corrugata Benth.

Type

Type collection. L. Riedel 114 (holotype K; isotype LE), Borba, Rio Madeira, Amazonas, Brazil.

Synonyms

Tounatea corrugata (Benth.) Taub., Tunatea corrugata (Benth.) Kuntze

Description

Description - Tree with tomentose-velutinous branchlets; stipules caducous, 7-8 mm long, 4-6 mm wide, falcate, ovate to ovate-oblong, acute, tomentose-velutinous externally, glabrous within; petioles 3.5-6 cm long, terete, tomentulose; rachis 10.5-19 cm long, ± canaliculate and stipellate at each pair of leaflets, tomentulose; leaflets (2-) 3- or 4-jugate, opposite to subopposite, the petiolules (1.5-)3-5 mm long, tomentulose, the blades coriaceous to rigid-coriaceous, those of the lowermost pair smaller, 5.5-12 cm long, 3.5-5 cm wide, those of the other pairs 8.5-18 cm long, 4.5-8 cm wide, all the blades elliptic to oblong-elliptic or obovate to oblong-oblanceolate, the margins often revolute, the base acute to rounded-obtuse, the apex truncate to rounded or retuse, rarely apiculate or acute, glabrous on the upper surface, tomentose beneath, the venation conspicuous, the upper surface of the leaflets rugulose to rugose by the impression of the costa and the primary to secondary veins, these salient beneath; inflorescences racemose, in ramigerous fascicles, 7-22 cm long, the axis strigulose to tomentulose, the bracts persistent, ovate to broadly ovate, acute, 1.5-2.5 mm long, 1.5 mm wide, strigulose-tomentulose externally, glabrous within, the bracteoles lacking; pedicels 10-14 mm long, pilosulose; buds globose to subglobose, ca 5-7 mm diameter; calyx segments 4, usually persistent, densely strigulose externally,, glabrous within; petal glabrous, sordid-yellow, the claw 1-1.5 mm long, the blade broadly ovate, 5-6 mm long, 5-7 mm wide; larger stamens 4, glabrous, the filaments (7-)9-12 mm long, the anthers oblong, ca 2 mm long and 0.8 mm wide, the smaller stamens glabrous, the filaments 6-7.5 mm long, the anthers oblong, 1.5 mm long, 0.5 mm wide; gynoecium sericeous, the stigma truncate-obtuse, the style 0.5-1 mm long, the ovary narrowly arcuate-oblong, 5-8 mm long, 1.5-2 mm wide, the gynophore 3-5 mm long; fruit (immature) 1-4-seeded, moniliform, the segments ca 3 cm long and 2 cm wide, oval, minutely reddish sericeous.

Discussion

Like S. laurifolia, its nearest ally, S. corrugata has relatively large stipules and this characteristic separates them from their relative, S. leptopetala. The rugose or rugulose leaflets of S. corrugata distinguish it from the other two species at a glance.

Common Names

Coração de negro

Distribution

(Fig. 8). Lowland riverine forest in the lower half of the Amazon Basin, from Manáos to the vicinity of Obidos on the Amazon River, north on the Rio Cumina and south as far as the upper drainage of the Rio Trombetas. It occurs on high, non-inundated lands along the rivers or rarely in savannas.

Brazil South America| Amazonas Brazil South America| Pará Brazil South America|