Subshrubs, to 2 m tall. Stem glabrous or slightly puberulent, angulate. Stipules subulate; petiolar gland on lowest pair of pinnae; pinnae 2-6 pairs, 1.2-2.5 cm; leaflets 6-21 pairs per pinna, oblong, 4-6 × ca. 2 mm, ciliate along margin, slightly asymmetric, base truncate, apex acute. Heads axillary, ca. 5 mm in diam., 4-10-flowered; bracteoles ovate, caducous. Flowers white, upper ones bisexual, lower ones male. Calyx campanulate, ca. 2.5 mm, 5-dentate. Petals 5, narrowly lanceolate, 3-4 mm. Stamens 10, ca. 5 mm, free. Ovary oblong, ca. 2 mm. Legume reddish brown, straight or slightly curved, linear, 4-11 × 0.2-0.4 cm. Seeds dark brown, rectangular, ca. 3 mm.
Home