Argyrolobium angustissimum (E.Mey.) T.J.Edwards

Herb, 0.2-0.3 m tall, erect, sparsely branched, stems weakly perennial, shortly sericeous, plants solitary, or forming small clumps. Leaves adaxially glabrous, abaxially shortly sericeous leaflets; linear, 25-45 x 1.0-1.5 mm, conduplicate, apex acute; petiole 1.5-3.0 mm long; stipules deltoid to linear, 2-4 x 0.5-1.0 mm. Inflorescence pseudo-umbellate, 1-6-flowered, peduncles leaf-opposed; bracts linear, 4-5 x 0.75-1.00 mm; bracteoles linear, 3.5-5.0 x 0.75 mm. Calyx shortly sericeous, upper lip 14-15 mm long, sinus 12-14 mm deep; lower lip 15-17 mm long, lobes 4-5 mm long, medial lobe linear. Corolla russet and yellow; standard obovate, 16-18 x 10-12 mm, adaxial surface sparsely sericeous, base cuneate, claw 1-2 mm long; wings narrowly oblong to obovate, 14.0-15.0 x 3.5 mm, with lunate-lamellate sculpturing in upper basal zone, claw 1.0-1.5 mm long; keel cymbiform, 7-9 x 3.5-5.0 mm, distally sericeous, claw 1.0-5.0 mm. Stamens monadelphous; anthers very weakly dimorphic. Ovary weakly arcuate, ± 10 mm long, densely sericeous; style 3-4 mm long, basally hairy. Fruit not seen. Seed not seen.