Macrophyll trees 3-10 m with trunk attaining 1-1.5 dm dbh, glabrous except for minutely puberulent peduncles and fl-buds or for sometimes remotely minutely ciliolate lfts, the ample chartaceous lfts dull olivaceous above, paler brownish-olivaceous beneath, the small hemispherical capitula arising singly from stipulate but efoliate nodes of brachyblasts axillary to coeval or new-fallen primary lvs, immersed in hornotinous foliage. Stipules triangular-subulate ±1-1.5 mm, firm, externally nerveless or faintly striate when young, those of primary lvs deciduous, those of brachyblasts persistent. Lf-formula i/1½, the odd proximal lft of each pinna inserted far below mid-rachis and <½ as long as distal pair; lf-stks including fuscous pulvinus 1.5—4.3 cm, at middle 0.6-1.1 mm diam, dilated and bicupulate at apex, the ventral groove shallow and narrow; rachis of pinnae 11-25 mm; lft- pulvinules (1—)1.5—2.5 mm, lustrous, cross-wrinkled; distal lfts inequilaterally broad- or ovate-elliptic from semicordate base, very shortly obtusely (sometimes obscurely) acuminate, the distal pair 6-13 x 2.7-7 cm, 1.8-2.2 times as long as wide; venation essentially pinnate, the gently incurved midrib displaced to divide blade ±1:1.35-1.5, giving rise on anterior side to ±7-8 incurved secondary nerves brochidodrome well within the loosely revolute margin, the inner of 2 posterior primary nerves incurved to anastomosis well short of mid-blade, the outer one very short, these all, together with transverse tertiary and openly reticular venules finely prominulous on both faces. Peduncles slender 8-18 mm, ebracteate; capitula 14—18-fld, the fls outwardly homomorphic (though some functionally staminate), the receptacle not over 2 mm; bracts subulate, scarcely 0.5 mm, persistent; perianth membranous glabrous 4-merous, the calyx and corolla weakly nerved or the calyx sometimes weakly striate; calyx in external view either campanulate or turbinate-campanulate 1-1.2 x 1 mm, but the lower half of calyx solid (= a cryptic pedicel) and the true calyx reduced to a shallowly campanulate subtruncate limb 0.5-0.6 mm; corolla 5.2-5.6 mm, the lobes 1.4-2 mm; androecium (14-)16-22-merous, 16-27 mm, the stemonozone <1 mm, the tube ±4.5-5.5 mm (a few filaments often separating near mid-tube), the tassel reportedly either white and distally rubescent, or red; ovary of bisexual fls arising at level of top of stemonozone, obscurely stipitate, at anthesis glabrous. Pods (few seen) almost linear beyond the backwardly attenuate base, ±17-21 x 1 cm, minutely appressed-puberulent overall, the lignescent sutural keels in dorsal view ±4 mm wide, the plane recessed valves coarsely venose lengthwise with subparallel, randomly braided fibers; seeds unknown.