Dwarf and spreading shrub, up to 0.2 × 0.5 m. Branches stout, ascending and horizontal, 10-25 mm diameter. Cladodes linear, striate, compressed, erect to spreading, green to green-bronze, frequently hairy when young (hairs sometimes retrorse), 30-95 × 4-8 mm; apex subacute to obtuse, yellow to yellow-green; leaf nodes 2-4. Leaves simple, obovate to oblanceolate, fleshy, green or green-bronze, present on seedlings, but absent on adult plants, 6-8 × 2-5.5 mm; adaxial and abaxial surfaces hairy; apex emarginate to retuse; base cuneate; petiole hairy, c. 2 mm long. Leaves on cladodes reduced to a scale, triangular, glabrous, <0.5 mm long; apex acute. Stipules free, triangular, 0.9-1 × 0.7-0.8 mm; adaxial surface glabrous; abaxial surface hairy, becoming glabrous with age; apex acute; margin hairy. Inflorescence a raceme, 1- 2(-4) per node, each with (l-)2-3(-4) flowers. Peduncle hairy, green, 7-8 mm long. Bracts triangular, glabrous, pale green, < 1 mm long; apex acute; margin hairy. Pedicel hairy, pale green, 2.5-8 mm long. Bracteoles at top of pedicel, green and occasionally flushed red, < 0.5 mm long; apex acute; margin hairy. Calyx campanulate, 4.5-5.5 × c. 2 mm; inner surface glabrous, green; outer surface hairy, green and occasionally flushed red. Calyx lobes narrow-triangular, green and usually flushed red, 2-2.5 mm long; adaxial surface densely hairy; apex acute; two upper lobes usually appressed to base of standard; three lower lobes spreading away from keel. Standard obovate, patent, positioned in central area of keel, weakly keeled, margins recurved, c. 12 × c. 8 mm; central area of adaxial surface purple, margins white, sometimes purpleveined; abaxial surface white with a darkened central part; claw pale green, c. 3 mm long; apex emarginate and occasionally mucronulate. Wings oblong, shorter than keel, c. 9 × c. 2.5 mm; distal area of adaxial surface purple, proximal area pale green; abaxial surface white, purple-veined; auricle triangular, pale green, 1-1.25 mm long; claw pale green, 2.5-3 mm long; apex acute. Keel (Fig. 1C) c. 10 × c. 3.5 mm; distal area of adaxial surface purple, proximal area white or pale green; auricle triangular, pale green, c. 1 mm long; apex obtuse; claw pale green, 3.5-4 mm long. Stamens 9- 11.5 mm long; lower filaments connate for c. 2h length and with outside filaments free for 4-4.5 mm. Pistil exserted beyond stamens, c. 12 mm long; style bearded on upper surface; ovary weakly falcate, glabrous; ovules (8—)13—14(—16). Pod oblong or oblanceolate, laterally compressed, light grey or brown, one or both valves often partially dehiscent at proximal end, 14-21(-23) × 4-6(-7.5) mm; beak on adaxial suture, stout, pungent, 1-2 mm long. Seeds oblong-reniform, (4-)6-8 per pod, olive green, green-yellow, or dull yellow, occasionally with black mottling, 2.5-3.5 × 1.5-3 mm. FL Jan-Dec, FT Dec-Apr.

Erect or spreading shrub, up to 1-2 × 1-2 m, with densely placed branches and cladodes. Branches erect and spreading from base, 10-40(-60) mm diameter. Cladodes linear, striate, compressed, erect to spreading, green, glabrous, often crowded at ends of branches, 60-220 × 1.5- 2.5 mm; apex subacute, yellow; leaf nodes 4-9. Leaves 1-9-foliolate, fleshy, obovate or sometimes ovate, hairy; adaxial surface mottled; abaxial surface green; apex emarginate to retuse; margin hairy; leaflets sessile or with short petiolule, 1.5-7 × 1-6.5 mm; petiole hairy, 8-16 mm long. Leaves on cladodes reduced to a scale, triangular, glabrous, < 0.5 mm long; apex acute. Stipules clasping shoot, triangular, 0.4-0.5 × 0.4-0.5 mm; adaxial surface glabrous; abaxial surface hairy, becoming glabrous with age; apex subacute to obtuse; margin hairy. Inflorescence a raceme, 1 per node, each with (3-)5-6 flowers. Peduncle glabrous to sparsely hairy, green, 7-16 mm long. Bracts triangular to narrow-triangular, pale green becoming membranous, 0.5-1 mm long; apex acute to subacute; margin hairy. Pedicel glabrous, pale green, 2-A mm long. Bracteoles at base of receptacle or on upper part of pedicel, narrow- triangular, green and flushed red, glabrous, 0.4—0.8 × 0.1-0.3 mm; apex acute; margin hairy. Calyx campanulate, c. 1.5 × c. 1 mm; inner and outer surfaces glabrous, green, usually flushed with red. Calyx lobes triangular, flushed red, c. 0.5 mm long; apex acute; margin hairy. Bud white to pale purple. Standard obovate, spreading above wings and keel, 3—4 × 3.5^4.5 mm; adaxial surface purple, purpleveined; abaxial surface white, purple-veined; apex retuse; margin recurved; claw pale green, c. 1 mm long. Wings oblong, longer than keel, c. 4 × c. 1 mm; adaxial and abaxial surfaces white, distal area flushed purple, sometimes purple-veined; auricle rounded, white, c. 0.3 × c. 0.3 mm; claw pale green, c. 1 mm long. Keel (Fig. IB) c. 4 xc. 1.5 mm; distal area of adaxial and abaxial surfaces purple, central area white, and proximal area pale green; auricle rounded, white, c. 0.25 mm long; claw pale green, c. 2 mm long. Stamens 3-3.5 mm long; lower filaments connate for c. 7A length and with outside filaments free for 0.3-0.5 mm. Pistil exserted beyond stamens, c. 4 mm long; style with a ring of hairs below stigma; ovules 6-7. Pod obovate, broad at distal part, dorsally compressed, brown, pale grey, or straw-coloured, indehiscent, with inflated valves, 5-5.5 × 3-4 mm; beak on upper suture, slightly curved, stout, pungent, c. 1 mm long. Seeds oblongreniform, 1 (-2) per pod, light olive green or yellowgreen with black mottling, 2-2.5 × 1.5-2 mm. FL Oct-Feb, FT Dec-Jul.

Dwarf, rhizomatous shrub, up to (20-)40-60(-80) mm × 1 m, forming a dense mat or tufts of cladodes. Rhizomes becoming increasingly stout and woody with age, 5-200(-400) × (1-)2-3.5(-5) mm. Cladodes linear, striate, compressed, erect, yellow-green to orange-green, glabrous, (20-)40-60(-70) × 1.5-3(-3.5) mm; apex subacute to obtuse, yellow to yellow-green; leaf nodes (2-)4-8(-12). Leaves simple, broad-obovate to broad-elliptic, fleshy, entire, green, present on seedlings and absent on mature plants, 5.5-8 × 3- 5 mm; adaxial and abaxial surfaces with scattered hairs; apex emarginate to retuse; base cuneate to narrow-obtuse; petiole sparsely hairy, 2-2.5 mm long. Leaves on cladodes reduced to a scale, triangular, glabrous, 0.6-1.5 × 0.8-1.4 mm; apex acute. Stipules free, triangular, 0.6-1.1 × 0.6-1.2 mm; adaxial surface glabrous; abaxial surface hairy when young, glabrous at maturity; apex acute to sub-acute; margin hairy. Inflorescence a raceme, 1 per node, with (1-)2 flowers. Peduncle glabrous or sparsely hairy, green, 5-15 mm long. Bracts triangular, glabrous, pale green, 0.5-1 mm long; apex obtuse; margin hairy. Pedicel glabrous or hairy, pale green, 3-7.5 mm long. Bracteoles at top of pedicel, triangular, glabrous, green and often flushed red, c. 0.2 × c. 0.2 mm; margin hairy; apex acute. Calyx campanulate, c. 2.5 × c. 2.5 mm; inner surface glabrous, green; outer surface glabrous or sparsely hairy, green. Calyx lobes triangular, flushed red, c. 0.5 mm long; apex acute; margin hairy or glabrous. Bud green. Standard obovate, patent, 8-10 × 6-8 mm; adaxial surface central area purple, margin white, sometimes purple-green veined; abaxial surface green, margin cream-green, sometimes purplegreen veined; apex retuse; claw pale green, c. 1.5 mm long. Wings oblong, shorter than keel, 5- 6.5 × c. 2 mm; adaxial surface distal area purple, proximal area green; abaxial surface white, sometimes purple-veined; auricle triangular, pale green, apex obtuse, c. 1.25 mm long; claw pale green, c. 1.5 mm long. Keel (Fig. 1C) 6-8 × 2.5-3 mm; distal area of adaxial surface purple, proximal area pale green; distal area of abaxial surface purplegreen, proximal area pale green; auricle triangular, pale green, with obtuse apex, c. 0.75 mm long; claw pale green, 2-2.5 mm long. Stamens 7.5-9 mm long; lower filaments connate for c. 2/3 length and outside filaments free for 1.5-2.5 mm. Pistil exserted beyond stamens, c. 10 mm long; style with a ring of hairs below stigma, and sometimes a few scattered hairs on adaxial surface; ovules 9-11. Pod elliptic-oblong, laterally compressed, weakly falcate, black, brown, or grey, 7.5—13(—15) × 3-4- mm; one valve partially dehiscent from base; beak on adaxial suture, slightly upturned, stout, pungent, 1.5-2 mm long. Seeds oblong-reniform, (2)-4—6-(9) per pod, black, brown, tan, or olive green, 1.2-2 × 1-1.5 mm. FL Oct-Feb(- May), FT Nov-Jun.

Spreading, sprawling, sparsely branched shrub up to 0.5-1 × 1-2(-2.5) m broad; in disturbed habitats frequently suckering and forming patches up to 0.25 m tall and 1-1.5 m broad. Branches slender, decumbent, spreading, occasionally erect, arching and sprawling outwards, 10- 20 mm × 0.5-1.2 m. Cladodes linear, striate, slender, subterete to terete, olive green to brown-green, covered with purplish bloom when young, often brown or bronze in winter, becoming glabrous with age, 150-450 × 2-2.5 mm; leaf nodes 9-22. Leaves 1- 7-foliolate, fleshy; adaxial surfaces mottled greygreen or brown-green, hairy; abaxial surfaces pale green, hairy; apex emarginate to retuse; base cuneate to obtuse; margin sparsely hairy. Single or terminal leaflet broad-elliptic to ovate, 5-12 × 3-7 mm. Lateral leaflets broad-elliptic, ovate, or obovate, 3-4 × 1.75-2.5 mm; petiole hairy, 10-12 mm long; petiolule glabrous, 0.1-0.3 mm long. Leaves on cladodes reduced to a scale, triangular, glabrous, c. 2 mm long; apex acute. Stipules free, triangular to narrow-triangular, hairy or glabrous, 1.0-1.2 × c. 1.0 mm; apex acute; margin hairy or glabrous. Inflorescence a raceme, l(-2) per node, each with 9-11 flowers. Peduncle glabrous, covered with purplish bloom when young, 15-20 mm long. Bracts narrow-triangular, glabrous, c. 1 mm long; apex acute, with a tuft of hairs; margin sparsely hairy. Pedicel glabrous, reddish in colour, 2-3 mm long. Bracteoles at base of receptacle, narrow-triangular, flushed with red, 0.25-0.5 mm long; apex acute, with tuft of hairs; margin sparsely hairy. Calyx campanulate, 2.5-3 × c. 2 mm; inner and outer surfaces glabrous, green, usually flushed with red. Calyx lobes triangular, flushed red, c. 0.5 mm long; apex acute; margin hairy. Bud purple or white. Standard obovate, spreading above wings and keel, 3-4 × 3-4 mm; distal and central areas of adaxial and abaxial surfaces with purple blotch, proximal area pale green, sometimes purple-veined; apex retuse; margins white and recurved; claw pale green, c. 1.5 mm long. Wings broad-oblong, longer than keel, 3.5—4 × 1.5- 2 mm; distal and central areas of adaxial and abaxial surfaces white, with proximal area pale green, sometimes purple-veined; auricle rounded, pale green, c. 0.25 mm long; claw pale green, 1-1.25 mm long. Keel (Fig. IB) 3.5^.5 × c. 1.5 mm; distal area of adaxial and abaxial surfaces purple, central area white, proximal area pale green; auricle rounded, white, c. 0.25 mm long; claw pale green, c. 2 mm long. Stamens 3—4 mm long; lower filaments almost fully connate - alternate anthers subsessile and with free parts of filaments 0.2 mm long. Pistil similar length to stamens, c. 4 mm long; style with a ring of hairs below stigma; ovules 5-7(-8). Pod shortobovate or broad-elliptic, occasionally almost orbicular, dorsally compressed, valves inflated, brown or straw-coloured, indehiscent, 4—5.5 × 2-2.5 mm; beak on adaxial suture, straight or only slightly curved, stout, pungent, 1-2(-2.5) mm long. Seeds oblong-reniform, 1-2 per pod, olive green or orangebrown with black mottling, 1.5-2 × 1.25-1.5 mm. FL Oct-Feb(-Jul), FT Jan-Aug.

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.

Dwarf, spreading shrub, up to 0.15(-0.25) × 0.4(-l) m broad. Branches stout, ascending and horizontal, 10-35 mm diameter. Cladodes linear, striate, compressed, erect to spreading, green to green-bronze, often hairy when young, glabrous at maturity, 22-40(-75) × (2-)3-5(-6) mm; apex obtuse, yellow, green, bronze, or red; leaf nodes 2-4. Leaves simple, oblanceolate, fleshy, green to green-bronze, present on seedlings and occasionally mature plants, 5-8 × 2-4.5 mm; adaxial and abaxial surfaces with scattered hairs; apex emarginate to retuse; base cuneate; petiole glabrous or sparsely hairy, 1.5-2 mm long. Leaves on cladodes reduced to a scale, broadly triangular, glabrous, 0.5-0.6 × 0.9-1.1 mm; apex obtuse. Stipules free, broad-triangular, 0.25-0.4 × 0.75-0.9 mm; adaxial surface glabrous; abaxial surface hairy, becoming glabrous with age; apex subacute; margin hairy. Inflorescence a raceme, 1-2 per node, each with (1-)2-3 flowers. Peduncle hairy, green, 6-8 mm long. Bracts triangular, glabrous, pale green to tan, < 0.5 mm long; apex acute; margin hairy. Pedicel hairy, pale green, 3-4 mm long. Bracteoles at base of calyx, sometimes absent, glabrous, < 0.4 mm long; apex subacute; margin hairy. Calyx campanulate, 2.5-3 × c. 2 mm; inner surface glabrous, green; outer surface hairy, green. Calyx lobes triangular, green and often flushed red, < 1 mm long; outer surface densely hairy; apex acute, often black; margin hairy. Standard obovate, patent when young, reflexed at maturity, positioned at proximal area of keel, keeled, 6-7 × 5-6 mm; distal and central areas of adaxial surface purple, proximal area pale green, margins white, sometimes purple-veined; distal and central area of abaxial surface white, proximal area pale green, sometimes purple-veined; apex retuse; margins recurved; claw pale green, c. 3 mm long. Wings oblong, shorter than keel, 7-8 × c. 2 mm; distal and central areas of adaxial surface purple, proximal area green; distal and central areas of abaxial surface white, proximal area pale green; auricle triangular, pale green, apex subacute, c. 1 mm long; claw pale green, c. 2 mm long. Keel (Fig. 1C) 8.5-10 × 3 - 4 mm; distal and central areas of adaxial surface purple, proximal area pale green; auricle triangular, pale green, with subacute apex, c. 1.5 mm long; claw pale green, 3-3.5 mm long. Stamens 8.5-10 mm long; lower filaments connate for c. 2/3 length and outside filaments free for 2.5-3.5 mm. Pistil slightly exserted beyond stamens, 8.5-11 mm long; style bearded on upper surface; ovary weakly falcate, glabrous; ovules 11-12. Pod oblong or oblanceolate, laterally compressed, often weakly falcate, brown, dark brown, or black, usually indehiscent, 11-15 × 3.5-5.5 mm; beak on adaxial suture, stout, pungent, < 1 mm long. Seeds oblong-reniform, (3—)7—11 per pod, dull yellow or orange, brown-green, or olive green, often with black mottling, 2-2.5 × 1.5-2 mm. FL Nov-Jan, FT Dec-May.

Dwarf, spreading shrub, 20-60 mm × 0.5 m, usually forming a dense mat of cladodes. Branches short, stout, often below ground level, 10-20 mm diameter. Cladodes linear, striate, compressed, usually erect and crowded, green or yellow-green, often hairy when young, glabrous at maturity, 10-30(-50) × 1.5-2(-4.5) mm; apex subacute, yellow, yellow-green, or red; leaf nodes 2-5(- 7). Leaves simple, obovate to broad-oblanceolate, fleshy, green, only occasionally present on seedlings and absent on adults, 4-5 × 1-2 mm; adaxial and abaxial surfaces hairy; apex retuse to obtuse; base cuneate; margins hairy; petiole glabrous or hairy, c. 1 mm long. Leaves on cladodes reduced to a scale, narrow to broad-triangular, glabrous, < 1 mm long; apex subacute to obtuse. Stipules free, c. 0.5 × c. 0.25 mm; margin hairy. Inflorescence a raceme, 1-2 per node, each with (1-)2-3(-4) flowers. Peduncle glabrous to hairy, green, 3—4 mm long. Bracts triangular, glabrous, pale green becoming membranous, < 0.5 mm long; apex subacute to obtuse; margin hairy. Pedicel glabrous or hairy, pale green, 1-2 mm long. Bracteoles on pedicel, glabrous, < 0.5 mm long; apex acute; margin hairy. Calyx campanulate, green to green-yellow, 1.5-2 × 1- 2 mm; inner surface glabrous; outer surface glabrous to sparsely hairy. Calyx lobes narrow- to broadtriangular, c. 0.5 mm long; apex subacute to obtuse, red to green; margin hairy or occasionally glabrous. Bud pale purple. Standard obovate, spreading horizontally above wings and keel, 4.5-6.5 × 4-5 mm; adaxial surface purple, with white margins and purple- veined; abaxial surface white, purple-veined; apex retuse; margin recurved; claw pale green, c. 1.25 mm long. Wings oblong, longer than keel, 3.5-5.5 × c. 1.25 mm; adaxial and abaxial surfaces white, flushed purple, sometimes purple-veined; auricle rounded, pale green or white, < 0.25 mm long; claw pale green, c. 2 mm long. Keel (Fig. 1 A) 4.5—5 × c. 1.25 mm; distal area of adaxial and abaxial surfaces purple, white in central and proximal areas, sometimes purple-veined; auricle rounded, pale green or white, c. 0.25 mm long; claw pale green, c. 2 mm long. Stamens 3.5-5 mm long; lower filaments connate for c. ½ length and with outside filaments free for 1.75-2.25 mm. Pistil exserted beyond stamens, 4-6 mm long; style glabrous or with few scattered hairs on adaxial surface; ovules (4-)7-8. Pod short- or broad-oblong, occasionally broadelliptic or ovate, laterally compressed, brown, black, or yellow-green, one valve partially dehiscent from upper replum, other valve usually indehiscent or only weakly dehiscent, 5-7 × 4.5-5.5 mm; beak in a central apical position, straight or slightly curved, 1- 3 mm long. Seeds oblong-reniform, 1-3 per pod, yellow, yellow-green, green, or black, occasionally with green or black mottling, 2.5-3 × 1.75-2 mm. FL Nov-Feb, FT Jan-May.

Dwarf, rhizomatous shrub, up to 20-40(-60) mm × 1 m, forming a dense mat or tufts of cladodes. Rhizomes becoming increasingly stout and woody with age, 50-200 × 1- 2.5 mm. Cladodes filiform, linear, striate, compressed, erect to spreading, green to green-yellow, glabrous, 20-40(-60) × 0.75-1.8(-2) mm; apex subacute, yellow to yellow- green; leaf nodes (2-)5- 7(-14). Leaves simple, broad-obovate to broad-elliptic, fleshy, entire, green, present on seedlings and absent on mature plants, 5.5-8 × 3-5 mm; adaxial and abaxial surfaces with scattered hairs; apex emarginate to retuse; base cuneate to narrow-obtuse; petiole sparsely hairy, 2-2.5 mm long. Leaves on cladodes reduced to a scale, triangular, glabrous, 0.6-1.5 × 0.8-1.4 mm; apex acute. Stipules free, triangular, 0.6-1.1 × 0.6-1.2 mm; adaxial surface glabrous; abaxial surface hairy when young, glabrous at maturity; apex acute to sub-acute; margin hairy. Inflorescence a raceme, 1 per node, each with 1(-2) flowers. Peduncle glabrous, occasionally sparsely hairy, green, 4-15 mm long. Bracts, triangular, glabrous, pale green, 0.5-0.8 × 0.5-0.8 mm; apex acute; margin hairy. Pedicel glabrous, occasionally sparsely hairy, pale green, 3-7.5 mm long. Bracteoles at top of pedicel, triangular to narrowtriangular, glabrous, green and occasionally flushed red, 0.2-0.3 × 0.1-0.2 mm; apex acute; margin hairy. Calyx campanulate, c. 2.5 × c. 2.5 mm; inner surface glabrous, green; outer surface glabrous or sparsely hairy, green. Calyx lobes triangular, flushed red, c. 0.5 mm long; apex acute; margin hairy or glabrous. Bud green. Standard obovate, patent, 8-10 × 6-8 mm; adaxial surface white, central area purple, sometimes purple-green veined; abaxial surface green, margin cream-green, sometimes purple-green veined; apex retuse; claw pale green, c. 1.5 mm long. Wings oblong, shorter than keel, 5-6.5 × c. 2 mm; distal area of adaxial surface purple, proximal area green; abaxial surface white, sometimes purpleveined; auricle triangular, pale green, apex obtuse, c. 1.25 mm long; claw pale green. Keel (Fig. 1C) 6- 8 × 2.5-3 mm; distal area of adaxial surface purple, proximal area pale green; distal area of abaxial surface dark, proximal area pale green; auricle triangular, pale green, c. 0.75 mm long, with obtuse apex; claw pale green, 2-2.5 mm long. Stamens 7.5-9 mm long; lower filaments connate for c. 2A length and outside filaments free for 1.5-2.5 mm. Pistil exserted beyond stamens, c. 10 mm long; style with a ring of hairs below stigma; ovules 9-11. Pod ellipticoblong, laterally compressed, weakly falcate, black, brown, or grey, one valve dehiscent from base, 7.5- 13 × 3—4 mm; beak on adaxial suture, slightly upturned, stout, pungent, 1.5-2 mm long. Seeds oblong-reniform, (2-)4—6(-9) per pod, black, brown, tan, or olive green, 1.2-2 × 1-1.5 mm. FL Oct-Mar, FT Nov-May.

Dwarf, spreading shrub, up to 0.15 m × 0.4 m. Branches stout, ascending and horizontal, 10-25 mm diameter. Cladodes linear, striate, usually subterete but occasionally compressed, erect to spreading, green and green yellow, often flushed with red, glabrous or sparsely hairy when young, glabrous at maturity, (20-)40- 70(-95) × 1.5—3(—4) mm; apex obtuse, yellow or green, often red in winter; leaf nodes 2-6. Leaves simple, oblanceolate, fleshy, entire, green to greenbronze, present on seedlings and occasionally on mature plants, 4-7.5 × 2-4.5 mm; adaxial and abaxial surfaces with scattered hairs; apex emarginate to retuse; base cuneate; petiole usually glabrous, 1.5-2 mm long. Leaves on cladodes usually reduced to a scale, triangular, glabrous, < 0.5 mm long; apex acute. Stipules free, triangular to narrow-triangular, 0.5-1.1 × 0.6-1 mm; adaxial surface glabrous; abaxial surface glabrous or with a few sparse hairs, glabrous at maturity; apex acute; margin hairy. Inflorescence a raceme, 1-2 per node, each with 2-3(-5) flowers. Peduncle hairy, green, 3.5- 10.5 mm long. Bracts triangular, glabrous, pale green to tan, 0.7-1 × 0.4-0.6 mm; apex acute; margin hairy. Pedicel hairy, pale green, 6-10 mm long. Bracteoles usually absent, if present on pedicel then narrow-triangular, glabrous, 0.2-0.4 mm long; apex acute; margin hairy. Calyx campanulate, 4-5.5 × 2- 2.5 mm; inner surface glabrous, green; outer surface glabrous to sparsely hairy, green. Calyx lobes longtriangular to triangular, green, 1-2 mm long; inner surface densely hairy; apex acute; margin hairy. Standard obovate, patent and positioned in central area of keel, keeled, 8-10 × 6.5-7.5 mm; distal and central areas of adaxial surface purple, proximal area pale green, margins white, sometimes purple-veined; distal and central areas of abaxial surface white, proximal area pale green, sometimes purple-veined; apex retuse; margins recurved; claw pale green, c. 3 mm long. Wings oblong, shorter than keel, 7-8 × c. 2 mm; distal and central areas of adaxial surface purple, proximal area green; distal and central areas of abaxial surface white, proximal area pale green; auricle triangular, pale green, apex subacute, c. 1 mm long; claw pale green, c. 2 mm long. Keel (Fig. 1C) 8.5-10 × 3—4 mm; distal and central areas of adaxial surface purple, proximal area pale green; auricle triangular, pale green, c. 1.5 mm long; apex subacute; claw pale green, 3-3.5 mm long. Stamens 8.5-10 mm long; lower filaments connate for c. 2/3 length, and with outside filaments free for 2-3 mm. Pistil similar length to stamens, 8.5-10 mm long; style bearded on adaxial surface; ovary weakly falcate, glabrous; ovules 11-13. Pod oblong to longelliptic, laterally compressed, weakly falcate, dark brown or light grey, indehiscent or occasionally with one valve partially dehiscent at base, 12-17 × 3- 4 mm; beak on adaxial suture, only weakly upturned, stout, pungent, 1-2 mm long. Seeds oblongreniform, (4—)9—11(—13) per pod, yellow, yellowgreen, or olive green, with black mottling, 2-2.75 × 1.5-2.5 mm. FL Nov-Jan, FT Dec-Mar.

Suffrutex habitu, ramulis, et leguminibus C. monroi similis, autem distinguibilis calyce glabro, calycis lobis longioribus et acutis, et vexillo aequanti vel longiore quam carina.