Oxalidaceae
Fls perfect, regular, 5-merous, solitary or in cymes, hypog. Sepals us. imbricate; petals contorted; stamens 10 (sts 5 imperfect) connate at base. Ovary us. 5-celled; ovules axile, 1-(; styles us. 5. Fr. a loculicidal capsule; seeds with cop. endosperm and us. elastic testa. Mostly herbs or subshrubs with alt., compound, exstipulate lvs. Some 8 tropical to temperate genera with about 900 spp.