Indumentum puberulent constituted of trichomes tector c.
Leaves 2.7-6.5 cm long; petiole 11-18 mm long; pulvinus 1-1.3 mm diam; rachis 0.4-0.7 cm long; extrafloral nectaries 1, ellipsoid, fusiform to claviform, short stipitate or stipitate, located between the leaflets of the proximal pair, 1.2-1.5 x 0.2-0.4 mm; leaflets 2 pairs, papyraceous, abaxial face pubescent and adaxial face puberulent, the distal 22-50 x 9-22 mm, the proximal 17-33 x 9-23 mm, elliptic and ovate, venation brochidodromous, nervures 6-8 pairs, apex acute, rounded and obtuse, base rounded, obliquecuneate to subcordada, margin revolute, ciliated.
Fruit puberulent, 4.3-9 x 0.8-12 cm; seeds 5.5-6 x 2-2.5 mm.
Inflorescences terminal or axillary, paniculate-corimbosa, 8-21 flowered, 3.5-11.5 cm long; bracts ovate, 2.3-4 mm long, deciduous, strigulose, margin glabrous; pedicel 2-3.3 cm long; extrafloral nectaries absent; flower 3-4.7 cm diam; sepals heteromorphic, deflexed, two smaller oval-suborbicular, 4-7 x 3.6-5 mm, puberulent, margin ciliated, three larger ovalsuborbicular and oblong-obovate, 7-10 x 6-9 mm, glabrous, margin ciliated; petals almost isomorphic, yellow, base orange-red, oval-flabellate, 17-22 x 15-25 mm; stamens 7, heteromorphic, three largest, 9-11 mm long, four smaller, 6.7-8 mm long, fillets 2.2-6 mm long, anthers 4.2-7 mm long; three staminodes 3.2-4 mm long; ovary pilosulous the laterals seams, 13-14 x 1.3-2 mm, 42-56 ovulated, style 2-2.5 mm long.
Inflorescences terminal, paniculate or racemose, 18-30 flowered, 3.5-8 cm long; bracts lanceolate, 8-9 mm long, deciduous, pilosulose, margin glabrous; pedicel 0.9-2.5 cm long; extrafloral nectaries absent; flower 1.3-2.5 cm diam; sepals heteromorphic, two smaller ovate, 3-4 x 2.2-3.4 mm, puberulent, margin glabrous, three larger oval and suborbicular, 5.8-8.6 x 4.2-8 mm, puberulent, margin glabrous; petals heteromorphic, yellow, petal vexilar obovate, 14-17 x 11.5-13 mm, two laterals obovate, 17-20 x 11.5-15 mm, two abaxial obovate and subreniform, 14-25 x 24-29 mm; stamens 7, almost isomorphic, 9-11 mm long, fillets 2-3.8 mm long, anthers 6-8 mm long; three staminodes 3-5 mm long; ovary glabrous, 23-25 x 0.7-0.8 mm, 89-101 ovulated, style 2-2.4 mm long.
It is readily distinguished by a combination of perennial habit, decumbent or ascending stems, minutely puberulent pedicels all around, two stamens, broadly obovate-orbicular petals 0.7-1 mm subequaling sepals, and broadly elliptic fruits 2.5-3 mm long with short style equaling the apical notch.
often auriculate) cauline leaves, fruiting pedicels puberulent all around (vs.
glabrous or puberulent midvein and leaf margin), longer fruiting pedicels 4-6 (vs.
meyenii, but the species is substantially distinct for laving lanceolate to elliptic and puberulent (vs.
non-reticulate) fruits, stems puberulent with curved vs.