Prostrate slender shrub with branches up to 4 dm. or occ. 8 dm. long; branchlets 1-2 mm. wide, compressed, striate, sparsely hairy. Lvs 1-3-foliolate; lflts ± linear, glab. or nearly so. Infl. of short 2-3-fld racemes on pilose peduncles hardly > 3 mm. long. Fls ± 4 × 3 mm., on minute ± pilose pedicels. Calyx c. 2 × 1 mm., glab. or nearly so; teeth minute, blunt. Standard white, with purple basal blotch and purple veins; keel whitish, auricles pointed; wings white, auricles bluntly pointed. Pods 3-4 × 2-3 mm., ovoid, turgid, dark brown to black; beak stout to slender, ± 1 mm. long, stylar portion long-persistent. Seeds yellowish brown, ± heavily black-mottled.

Prostrate to decumbent much-branched shrub with stems up to 1 m. long. Branchlets compressed, striate, sparsely hairy, 1-2 mm. wide. Racemes 4-8-fld, on pilose peduncles ± 8 mm. long. Fls ± 3 × 2 mm., on pilose pedicels ± 1 mm. long. Calyx < 1 × 1 mm., glab.; teeth minute. Pods c. 3 × 1 mm., subturgid, brown; beak stout, blunt, hardly tapered; replum very thick. Seeds 1-(2), pale brown.

Shrub, ± erect, much-branched from crown of stout rootstock, up to c. 3 dm. tall. Branchlets subterete, ± 1 mm. diam., finely grooved, clad in appressed hairs. Lvs 1-3-foliolate, lflts minute. Infl. of 1-2 racemes per notch, 3-6-fld, on pilose peduncles 1-3 mm. long. Fls ± 3 × 3 mm., subsessile. Calyx ± 1 × 1 mm., sparsely hairy; teeth minute, blunt. Standard white, purple-veined; keel whitish, auricles bluntly pointed; wings white, auricles bluntly pointed. Ovary glab. Pods 3-4 × 1-2 mm., brown, subturgid; beak minute, subulate, obliquely placed, slightly curved, stylar portion long-persistent. Seeds 1-2, pale brown.

Decumbent much-branched slender shrub with branches up to c. 1 m. long; branchlets ascending, c. 1 mm. wide, compressed, striate, sparsely hairy. Lvs 1-3-foliolate, ± hairy; lflts 3-5 mm. long, narrow, emarginate. Infl. of 1-3, 5-10-fld racemes on pilose peduncles c. 6 mm. long. Fls c. 3 × 2 mm., on pilose pedicels c. 1 mm. long. Calyx sparsely hairy; teeth short, blunt. Standard white, with purplish basal blotch and veins; keel whitish, purple-veined, auricles bluntly pointed. Ovary glab. or nearly so. Pods ± 4 × 1·5 mm., obliquely oblong, slightly compressed, black; beak subulate, curved, obliquely placed. Seeds 2-4, pale brown, reniform, c. 1·5 mm. long.

Prostrate slender shrub up to ± 5 dm. long; branchlets 1-(2) mm. wide, striate, compressed, ± pilose. Lvs 1-5-folioliate, pilose, narrowly obcordate-cuneate. Infl. of densely 3-7-fld racemes on pilose peduncles. Fls ± 4 × 5 mm., on pubescent pedicels hardly 1 mm. long. Calyx ± 1 × 1 mm., glab.; teeth minute. Standard purple towards base, purple-veined; keel yellowish, purplish at apex, auricles pointed; wings whitish, auricles pointed. Ovary glab. Pods ± 3 × 2 mm., narrowly obliquely ovate-oblong, subturgid, brownish; beak rather slender, curved. Seeds (1)-2, pale brown, ± heavily black-mottled.

2n = 32

Prostrate, sprawling shrub, up to 0.2 × 1.5 m, forming a flat spreading mat. Branches up to 0.8 m long, procumbent. Cladodes linear, striate, compressed, green to light brown, sparsely covered with hairs, prostrate and ascending, 55-160 × 1.5-2 mm; apex subacute, green or light brown; leaf nodes 8-15. Leaves 1-3(-5)-foliolate, fleshy; adaxial surface mottled brown, brown-green or green; abaxial surface green; apex emarginate to retuse; base cuneate to obtuse; margin glabrous to sparsely hairy, sometimes partially sinuate. Single or terminal leaflet oblong, 5.5-14 × 2-4 mm; adaxial and abaxial surfaces hairy. Lateral leaflets obovate, 3-5 × 1-2.5 mm; adaxial and abaxial surfaces glabrous to sparsely hairy; petiole hairy, 4-8 mm long; petiolule glabrous, 0.1-0.3 mm long. Leaves on cladodes reduced to a scale, triangular, glabrous, < 1 mm long; apex acute. Stipules free, broad-triangular, 0.5-0.8 × c. 1 mm; apex subacute; margin hairy; thinly herbaceous at first but becoming dry and membranous. Inflorescence a raceme, 1(-2) per node, each with 4-6 flowers. Peduncle hairy, green, 2-4 mm long. Bracts triangular, glabrous, < 0.5 mm long; apex acute; margin hairy. Pedicel hairy, pale green and usually flushed red, 1-1.5 mm long. Bracteoles on pedicel, triangular, glabrous, 0.3- 0.4 mm long; apex acute; margin hairy. Calyx campanulate, c. 1.5 × c. 1.25 mm; inner surface glabrous, green, occasionally flushed red; outer surface glabrous, green. Calyx lobes broad-triangular to triangular, c. 0.1 mm long; apex subacute, often flushed red; margin hairy. Bud pale green. Standard obovate, patent, 4-5 × 4-5 mm; distal and central areas of adaxial surface purple, margins and proximal area white, sometimes purple-veined; distal and central areas of abaxial surface white, proximal area green, sometimes purple-veined; apex retuse; margins recurved; claw pale green, c. 1.5 mm long. Wings oblong, longer than keel, 3.5-4 × 1-1.5 mm; adaxial and abaxial surfaces white, sometimes purple- veined; auricle rounded, pale green, < 0.5 mm long; claw pale green, 1-1.5 mm long. Keel (Fig. 1B) c. 4.5 × c. 1.5 mm; distal area of adaxial surface purple, white in central and proximal areas; abaxial surface white, sometimes purple-veined; auricle rounded, white, c. 0.15 mm long; claw pale green, 1.5-2 mm long. Stamens c. 3.5 mm long; lower filaments connate for c. 2/3 of length and with outside filaments free for c. 1 mm. Pistil similar length to stamens, 3-3.5 mm long; style with a ring of hairs below stigma; ovules 4-10. Pod oblong, weakly dorsally compressed, valves inflated, dark greyblack, indehiscent, rarely weakly dehiscent at proximal end, 3.5-6 × 1.75-2 mm; beak on adaxial suture, slightly curved, stout, pungent, 0.25-0.5 mm long. Seeds oblong-reniform, (1-)2-4(-6) per pod, brick red, orange, olive green, or green-yellow, often with black mottling, 1.25-1.5 × c. 1 mm. FL Oct-Jan, FT Nov-Mar.