Rafnia diffusa Thunb.

Prostrate or decumbent, much-branched shrublet up to 0.6 m high. Leaves often penninerved; leaves on flowering branches variable, linear to narrowly lanceolate or elliptic or obovate, subopposite to opposite, 9-24 x 4-15 mm, sometimes bright green, remaining so when dry; basal leaves obovate or ovate to round, 13-35 x ± 20 mm; coppice leaves broadly obovate or round, 20-47 x 14-50 mm. Inflorescences single-flowered. Flowers small, 6-9 mm long. Pedicel 1-4 mm long. Bract narrowly triangular to linear, 0.3-0.8(-1.2) mm long. Bracteoles subulate to minute, 0.1-0.3 mm long. Calyx lobes triangular to narrowly triangular, ± as long as or shorter than the tube, 0.5-2 mm long; upper lobes often broader than the others; carinal lobe ± as long as or longer than the others; tube 0.8-2 mm long. Standard rounded or rarely ovate, sometimes folded in along the lower half of the edges, 6-9 x 5-10 mm, with or without an apical cusp; claw 1-3 mm long. Wings oblong to narrowly oblong, ± as long as the keel, 5-8 x 2-3 mm, with 4-6 rows of sculpturing invariably present; apex obtuse; claw minute, not broadly attached to the blade, 1-2 mm long (form 3: claw 3-4 mm long). Keel variable, rostrate or obtuse or truncate (form 3: keel rostrate, with upper margin concave, apex upcurved; form 6: keel ± obtuse, apex upcurved and ± square, 5-7 x 3-4 mm); upper margin straight; claw ± 2 mm long (form 3: claw 3-5 mm long). Stamens usually monadelphous or rarely diadelphous; staminal sheath straight, not widening towards the base. Pistil with the style sometimes incurved towards the apex; ovules 2-4; stigma small, fibrillose. Pods oblong, 9-12 x 3-4 mm; stipe 5-10 mm long; upper margin ± straight; lower margin proximally convex, upcurved towards the stipe. Seeds broadly reniform to narrowly oblong, 2-4 x 1-3 mm; sinus shallow; testa rough.