Prostrate perennial herb, the parts glabrate to pubescent or pilose; stock slender to rather stout; stems slender, creeping and rooting, us. much-branched, forming depressed us. dense patches up to 10 cm. or more diam. Lvs alt., trifoliolate, on very slender petioles up to ± 5 cm. long; stipules minute, sts absent. Lflts broad-obcordate to obovate-cuneate, or apex emarginate; 3-5-8 mm. long or more, membr., often glaucous or reddish below; sinus, if present, narrow. Peduncles 1-(4)-fld, ± 2 cm. long; bracteoles minute; pedicels becoming reflexed. Fls up to 10 mm. diam.; sepals narrow-ovate, ± 4-5 mm. long; petals pale to bright yellow, ± 10 mm. long. Capsule broad-cylindric, ± 10 mm. long; seeds few to several.

Perennial with slender primary root. Stems prostrate to suberect, to c. 40 cm long, slender, weak, branched, often rooting at nodes, covered with spreading flexible hairs. Lvs 3-foliolate, alternate, sometimes appearing almost whorled on short lateral stems, green or purple. Petiole (0.5)-1-7 cm long, with spreading flexible hairs; stipules usually 2-3 mm long, broad, with free, truncate apex, nearly glabrous to densely covered in long hairs. Petiolules very short. Lamina of leaflets equal, (2.5)-5-18 × (3)-7-23 mm, broadly obcordate, glabrous or sparsely hairy, with densely hairy midrib below; sinus of lamina narrow or broad, extending 1/2 length of lamina; margin ciliate; calli 0; lobes 2, usually rounded, occasionally leaflets not lobed. Infl. 1-5-flowered; peduncle 1-4 cm long, to 9.5 cm long at fruiting, with antrorse hairs; pedicels < peduncles, with antrorse hairs. Bracts 2-3.2 mm long, linear-subulate or linear-lanceolate, nearly glabrous, or hairy at base of pedicels; calli 0. Sepals 3-4.5-(5.2) mm long, elliptic-lanceolate, elliptic-ovate to elliptic-obovate, with antrorse hairs; margins sometimes red; calli 0. Petals 4.5-10-(13) mm long, oblong-obovate, yellow, glabrous. Stamens at 2 levels; filaments glabrous, connate towards base. Styles <, =, or a little > longer stamens, densely hairy. Capsule (6)-10-18-(20) mm long excluding styles, cylindric, usually densely clothed in short, simple, eglandular, ± retrorse hairs, or sometimes hairs sparser and then also with scattered, long, wide, curly, septate hairs, occasionally glabrous. Seed 1-1.3-(1.7) cm long, broad-ellipsoid, dark purplish brown; transverse ridges 4-10, either subacute with deep grooves between and sometimes white-topped, or obtuse with shallow grooves.