Slender macrophyllidious cauliflorous trees of forest understory, attaining 12 m with trunk 11 cm dbh, the annotinous and older branchlets pallid gray or cream-color, the young ones and all axes of lvs and inflorescence minutely grayish-puberulent, the ample papery bicolored lfts glabrous, when dry dull brown- olivaceous above, paler olivaceous beneath, the slenderly pedunculate, umbelliform capitula of pale green, pink-stamened, sweetly fragrant fls arising from extremely short efoliate brachyblasts axillary to fallen lvs on annotinous and older branches. Stipules erect appressed, of firm texture, ovate-triangular or lanceolate 2.5-6 x 1.2-4 mm, dorsally convex, externally nerveless or nearly so, persistent. Lf-formula ii/3-5, the lfts 20-40 per If; lf-stks 5-8 cm, the petiole 1.5-3.5 cm, at middle 1.3-1.9 mm diam, the 1 interpinnal segment somewhat longer; nectary between each pinna-pair sessile, shallow-cupular thick- rimmed, 1.5-2.5 mm diam; distal pinnae longer than first pair, their rachis 7-11.5 cm, the longer interfoliolar segments 2-4 cm; lfts opposite, the pulvinules in dorsal view ±1.5-2.5 mm, much shorter in ventral view, weakly wrinkled; lfts accrescent distally, inequilaterally elliptic or subrhombic-elliptic from cuneate base, contracted at apex into a lanceolate, at very tip obtuse apiculate acumen ±1 cm, the longer, furthest and penultimate blades 8-12.5 x 3-4.8 cm, 23-2.1 times as long as wide; venation pinnate, except for midrib ventrally immersed, bluntly prominulous dorsally, the straight or almost straight, subcentric midrib giving rise on each side to ±7-9 major (and random intercalary) but slender, widely ascending secondary nerves weakly brochidodrome well within the plane margin, the tertiary venulation faint, sinuous. Peduncles 1-2 per brachyblast, each arising singly from the axil of a rusty-strigulose bract, subcompressed, (1.5-)2.5-4 cm x 0.4-0.6 mm diam; capitula 30-48-fld, the homomorphic fls radiating from subglobose alveolate receptacle ±1.5 mm diam, finely hispidulous overall; bracts submembranous, early dry deciduous, spatulate ±0.5-0.7 mm, the blade hispidulous; pedicel 0.8-1.5 x 0.2-0.25 mm; calyx campanulate ±1 x 0.7-0.8 mm, the unequal teeth ±0.2 mm; corolla slenderly cylindric, a trifle dilated distally, ±6.5-7 mm and 1 mm diam, the triangular-ovate, often unequal teeth to 0.5 mm; androecium 25-28-merous 11-12 mm, the tube 6-6.5 mm, nearly as long as corolla tube, the stemonozone ±0.6 mm, the anthers 0.25-0.3 mm diam; disc 0, but the receptacle surrounding the base of the ovary tumid and slightly discolored; ovary glabrous, narrowly ellipsoid, tapering at apex, 9-12-ovulate; style 2-3 mm longer than longer stamens, the stigma poriform 0.1 mm diam. Pods subsessile, sinuously linear- moniliform and after dehiscence randomly twisted, (6—)9—11 -seeded, when well fertilized 14—20 cm, at each seed 6-7 mm and at each interseminal isthmus 2.5-3 mm wide, bluntly carinate by sutures ±0.8 mm wide but biconvex over seeds, the individual seed- segments ±16-20 mm long, the stiffly leathery, when ripe dark brown evenulose valves densely minutely puberulent overall, the endocarp smooth brown, the cavity continous; funicle and seed unknown, the seed described (Sabatier 2092) as green; one seedling (Sabatier 3050, ex parte, NY) has 6, simply paripin- nate, 6-8 foliolate eophylls.

In lowland virgin forest, known with certainty (see discussion) only from the Sinnamary-Counamama divide at 5°20^/N, 53°W in French Guiana. — Not mapped. — Fl. IX-X; fr. III-IV.

For commentary on this strongly characterized species, see description of sect. Pseudocojoba. In addition to the specimens cited, we have seen one from the upper Oyapock River (Camp Poivre, 19.III.1976, with very young fruit detached from the trunk, C. Sastre 4441, NY), which is almost certainly conspecific. The species is consequently to be expected in Amapá, Brazil.