Prostrate, occasionally decumbent, densely branched shrub, 25(-40) cm × 1-1.5(- 2) m. Branches 30-75(-100) cm long and up to 30 mm diameter, prostrate or weakly decumbent. Cladodes 50-100(-150) × 1—2 mm, prostrate, sometimes weakly ascending, linear, striate, compressed, Canterweakly plano-convex, light green to green-yellow, sparsely hairy to glabrous, apex subacute or obtuse; leaf nodes 7—11. Leaves 1—3-foliolate, present on seedlings and rarely on adults, terminal leaflet larger; lamina 2-5 × 1—2.5 mm, obovate, fleshy, green, adaxial and abaxial surfaces sparsely to moderately hairy, apex emarginate, base cuneate; petiole 1— 11 mm long, sparsely hairy, green; petiolule < 0.25 mm long, glabrous, light green. Leaves on cladodes reduced to scales, < 0.5 mm long, broadtriangular, glabrous, apex subacute, margin hairy. Stipules c. 0.5 × c. 0.5 mm, free, triangular, adaxial surface glabrous, abaxial surface glabrous or with a few scattered hairs and becoming glabrous with age, apex acute, margin hairy. Inflorescence a raceme, 1— 2(-3) per node, each with (2—)5—7(—13) flowers. Peduncle 1-8.5 mm long, glabrous or sparsely hairy, green, occasionally flushed red. Bracts < c. 0.5 mm long, triangular, glabrous, apex acute, margin hairy. Pedicel 2—4 mm long, glabrous to sparsely hairy, pale green. Bracteoles on upper part of pedicel, lanceolate, glabrous, green, occasionally flushed red, apex subacute, margin hairy. Calyx c. 1.5 × 1.8— 2 mm, campanulate, green, outer surface glabrous to sparsely hairy. Calyx lobes 0.2-0.3 mm long, triangular, inner surface glabrous, appressed to corolla, apex acute. Bud green or white. Standard 4—5 × 5— 6 mm, obovate, patent, positioned in central part of keel, keeled, apex refuse; inner surface with a purple blotch, white margins, purple-veined; outer surface white, green at base, purple-veined; claw c. 1 mm long, pale green. Wings 4-5 × 1.75-2 mm, oblong, longer than keel, apex obtuse; inner and outer surfaces white, and purple-veined; auricle rounded, white; claw c. 1.5 mm long, pale green. Keel (Fig. 2B) 3.5-4 × c. 1.5 mm, apex obtuse; distal part of inner and outer surfaces purple, proximal part white; auricle < 0.5 mm long, rounded, pale green; claw c. 1.5 mm long, pale green. Stamens 3 - 3.75 mm long; dorsal filaments connate for 7/8 of length, outer stamens free for c. 0.5 mm. Pistil c. 4 mm long, exserted beyond the stamens, glabrous; ovules 5-8. Pods 8-12 × 3-4 mm, elliptic to broadoblong, laterally compressed, spreading, brown or grey, valves dehiscent; beak c. 1 mm long, in a central apical position, stout, pungent-tipped. Seeds c. 2 × c. 1.5 mm, reniform, 2—5 per pod, dark purple or black, usually persistent on replum. Chromosome number In = 32 (Dawson 1989). FL Oct-Jan, FT Dec-May.

Shrub, up to 2 m × 2 m; sometimes suckering and forming broad patches up to 1 m tall. Branches up to 80 mm diameter, stout, ascending and spreading. Cladodes 70-150 × 1.5- 3 mm, erect to spreading, sometimes drooping, rarely divaricate, linear, striate, compressed, green to dark green, sometimes hairy when young, glabrous when mature, apex obtuse; leaf nodes 4—11. Leaves 1—3(—5)-foliolate, present on seedlings and on adult plants, terminal leaflet larger; lamina 2-7 × 1-4.5 mm, obovate, broad-obovate to broad-elliptic, fleshy, green, adaxial surface glabrous, abaxial surface glabrous or with a few scattered hairs, apex emarginate, base cuneate; petiole 7—11 mm long, glabrous except for a tuft of hairs at petiolule base, green; petiolule < 0.5 mm long, glabrous, light green. Leaves on cladodes reduced to scales, < 0.8 mm long, broad-triangular, glabrous, apex subacute. Stipules 0.9—1.3 × 1—1.4 mm, free, triangular, glabrous, apex subacute with a tuft of hairs, margin hairy. Inflorescence a raceme, 1 per node, each with 5—9(— 10) flowers clustered on upper third of raceme. Peduncle c. 8 mm long, glabrous, green. Bracts < 1 mm long, triangular, pale brown, adaxial surface hairy, abaxial surface glabrous, apex acute to subacute, margin hairy. Pedicel 1-1.5 mm long, glabrous, green. Bracteoles < 0.5 mm long, on upper part of pedicel or on receptacle, pale brown, adaxial surface hairy, abaxial surface glabrous, apex subacute to obtuse and with tuft of hairs. Calyx 3—3.5 × 2— 2.5 mm, campanulate, green, outer surface glabrous. Calyx lobes 0.5—1 mm long, triangular, inner surface hairy, appressed to corolla, apex acute. Standard 6— 6.5 × 7-8 mm, broad-obovate, patent, positioned towards front of keel, keeled, apex retuse or obtuse with an apiculate tip; white or with a pale central blotch, veins sometimes weakly flushed red-purple; claw c. 1 mm long, pale green. Wings 6-7 × 1.5- 2 mm, oblong, longer than keel, white, apex obtuse; auricle 0.2-0.3 mm long, triangular; claw 1.8-2 mm long, pale green. Keel (Fig. 2E) 5—6 × 1.5—1.8 mm, white, apex obtuse; auricle 0.3-0.5 mm long, triangular, white; claw 2-2.5 mm long, pale green. Stamens 4.5—5 mm long; dorsal filaments connate for c. ¾ of length, outer stamens free for c. 0.8 mm. Pistil 5-6 mm long, exserted beyond stamens, glabrous; ovules 8—9(—11); stigma with a ring of hairs at base. Pods 7—15 × 2.7-4.5 mm, oblong or broad-oblong, laterally compressed, erect, light grey or pale brown, both valves dehiscent at distal end; beak 2—2.5 mm long, in a central apical position, stout, pungenttipped. Seeds 2-3.7 × 1.6-2.4 mm, broad-oblong to broad-elliptic, 1-3 per pod, surface with 1—3 ridges, testa thin and membranous, light brown or tan. FL Dec-Mar, FT Jan—Dec.

Shrub, 2-3(-8) × 2-3(- 5) m. Branches up to 100 mm diameter, ascending and spreading. Cladodes 30—200 × 1.5—8 mm, ascending or spreading, linear, striate, weakly planoconvex to strongly flattened and compressed, green, yellow-green, or brown-green, glabrous to sparsely hairy, apex obtuse to subacute; leaf nodes 4—15. Leaves 1—3-foliolate, present on seedlings and rarely on adults, terminal leaflet larger; lamina 3—12(—22) × 1.3—7(—16) mm, obovate to oblong, fleshy, green, sometimes with dark mottling, adaxiai and abaxial surfaces glabrous to moderately hairy, apex emarginate, base cuneate; petiole 1-10 mm long, glabrous to moderately hairy, green; petiolule < 0.25 mm long, glabrous or sparsely hairy, light green. Leaves on cladodes reduced to scales, < 0.5 mm long, broad-triangular, glabrous, apex subacute, margin hairy. Stipules c. 1 × c. 1.5 mm, free, broad-triangular, adaxiai surface glabrous, abaxial surface glabrous or with few scattered hairs and becoming glabrous with age, apex subacute, margin hairy. Inflorescence a raceme, 1-3 per node, each with 4-15 flowers. Peduncle 1-10 mm long, glabrous to moderately hairy, green, occasionally flushed red. Bracts < c. 0.5 mm long, triangular, glabrous, apex acute, margin hairy. Pedicel 2—4 mm long, glabrous to sparsely hairy, pale green. Bracteoles on upper part of pedicel or lower part of receptacle, lanceolate, glabrous, green and often flushed red, apex subacute, margin hairy. Calyx 1.3- 1.7 × 1.7—2.2 mm, campanulate, green, outer surface glabrous to moderately hairy. Calyx lobes 0.2— 0.4 mm long, triangular, inner surface glabrous, appressed to corolla or rarely weakly spreading, apex acute. Standard 4—6 × 5—6.5 mm, obovate, patent, positioned in central part of keel, keeled, apex retuse; inner surface white, sometimes with a purple blotch, purple-veined; outer surface white, green at base, purple-veined; claw c. 1 mm long, pale green. Wings 4—5 × 1.7—2.2 mm, oblong, longer than keel, apex obtuse; inner and outer surfaces white, purpleveined; auricle rounded, white; claw c. 1.5 mm long, pale green. Keel (Fig. 2B) 3.2-4.2 × c. 1.5 mm, apex obtuse; distal part of inner and outer surfaces purple, proximal part white; auricle < 0.5 mm long, rounded, pale green; claw c. 1.5 mm long, pale green. Stamens 3—4 mm long; dorsal filaments connate for c. ¾ of length, outer stamens free for c. 0.5 mm. Pistil c. 4 mm long, exserted beyond the stamens, glabrous; ovules 5-10. Pods 6.5-15 × 2— 5.5 mm, oblong, broad-oblong, elliptic, broad-elliptic, or sometimes orbicular, laterally compressed, erect or spreading, brown, grey, or black, valves dehiscent; beak 0.5—2.5 mm long, in a central apical position, stout, pungent-tipped. Seeds 2.2-4 × 1.7-2.8 mm, oblong to reniform, 1-5 per pod, orange, red, green, or yellow-green and often with black mottling, usually persistent on replum. FL Oct-Feb, FT Nov-May.

Dwarf shrub, with lowspreading and sprawling habit, frequently suckering, up to 0.5 × 1(—2) m. Branches 10-30 mm diameter, stout, horizontal, spreading, sometimes erect. Cladodes 50-80(—100) × 3-5 mm, erect to spreading, linear, striate, plano-convex, rarely terete, yellow- green to green, hairy when young, becoming glabrous when mature, apex obtuse and yellowgreen; leaf nodes 5-10. Leaves simple, present on seedlings and sometimes on adults; lamina 4.5-12.5 × 1.8-4.5 mm, obovate to oblanceolate, fleshy, green and usually with several white blotches on adaxial surface, adaxial and abaxial surfaces with scattered hairs, apex refuse, base attenuate; petiole < 0.5 mm, glabrous, pale green. Leaves on cladodes reduced to scales, < 1 mm long, broad-triangular to triangular, hairy to sparsely hairy, apex subacute. Stipules c. 1 × c. 0.5 mm, free, broad-triangular, hairy. Inflorescence a raceme, (1—)2—3 per node, each with 2-6(-8) flowers. Peduncle 5-10 mm long, hairy, green. Bracts < 1 mm long, triangular, hairy on abaxial surface when young but glabrous at maturity, apex acute to subacute, margin hairy. Pedicel 1.5—2 mm long, hairy, green. Bracteoles 0.2—0.3 mm long, on upper part of pedicel or on receptacle, hairy on abaxial surface, sometimes with glands. Calyx 2.5-3 × c. 2 mm, campanulate, green, outer surface hairy. Calyx lobes 0.4—0.6 mm long, triangular, green and usually flushed red, inner surface glabrous or hairy, appressed to corolla, apex subacute. Standard 7—8 × 7—8 mm, broad-orbicular, patent, positioned in central part of keel, keeled, apex emarginate; central area of inner surface purple or red-purple, margins white, usually purple-veined; outer surface white; claw c. 2.5 mm long, green. Wings 5.5—6.5 × 2.5—3 mm, oblong, broad in distal part, longer than keel, apex broad, obtuse to truncate; inner and outer surfaces white, usually purple-veined; auricle 0.4—0.7 mm long, triangular, pale green; claw 1.6—1.8 mm long, pale green. Keel (Fig. 2C) c. 5 × c. 3.5 mm; distal part of inner surface purple, proximal part white or pale green; outer surface white and purple-veined; auricle c. 1 mm long, triangular, pale green, apex obtuse to subacute; claw c. 2 mm long, pale green. Stamens 4-5 mm long; dorsal filaments connate for c. ¾ of length, outer stamens free for c. 1 mm. Pistil 4—5 mm long, similar in length to stamens, glabrous; ovules 5-8. Pods 8-11 × 4.8-6 mm, broad-elliptic, laterally compressed, usually drooping, light grey to yellow-brown, both valves dehiscent in proximal part, abruptly narrowed to beak; beak 1.5-2 mm long, in a central apical position, stout, more-or-less triangular, pungent-tipped. Seeds 2.5-2.9 × 2.4- 2.6 mm, reniform, 1(—2) per pod, yellow-green or green with black mottling. FL Nov-Dec, FT Jan- May.

Liana, up to 1-3 m tall, climbing, scrambling, and sprawling, or rarely a bushy shrub without support. Branches up to 40 mm diameter, ascending and spreading. Cladodes 70- 350(-420) × 1.7—3 mm, spreading and often divaricate, linear, striate, terete, green, green-bronze, or bronze, hairy or glabrous, apex obtuse; leaf nodes 4—12. Leaves 1—5-foliolate, present on seedlings and usually on inner parts of adult plants, terminal leaflet larger; lamina 4.5—8 × 2.5-6 mm, obovate to broad-elliptic, fleshy, green or bronze-green, adaxial surface glabrous, abaxial surface glabrous or with a few scattered hairs, apex emarginate, base cuneate; petiole 6-25 mm long, glabrous or hairy, green or brown-green; petiolule 0.5-0.9 mm long, glabrous, light green. Leaves on cladodes reduced to scales, < 0.6 mm long, broad-triangular, glabrous, apex subacute. Stipules 0.7-1 × 0.6-0.8 mm, free, triangular, adaxial surface glabrous, abaxial surface with few scattered hairs, apex subacute, margin hairy. Inflorescence a raceme, 1—2(—3) per node, each with (1—)2—5 flowers. Peduncle 2-6 mm long, glabrous to densely hairy, green or red. Bracts 0.5-1.2 mm long, triangular, sparsely hairy, apex obtuse or subacute, margin hairy. Pedicel 2.5—4 mm long, glabrous to densely hairy, green or red. Bracteoles c. 0.5 × c. 0.3 mm, narrow-triangular, on receptacle or lower part of pedicel, green or red, apex obtuse to subacute, margin hairy. Calyx 4—5 × c. 2 mm, campanulate, green and occasionally flushed red, outer surface glabrous or hairy. Calyx lobes 1.5- 2.5 mm long, narrow-triangular, green and usually flushed red, inner surface densely hairy, apex acute; two ventral lobes appressed to base of standard, three dorsal lobes spreading away from keel. Standard 8— 9 × 8.5—12 mm, orbicular or broad-obovate, patent, positioned in central part of keel, weakly keeled, margins recurved, apex emarginate or occasionally mucronulate; central part of inner surface red-purple, margins white, sometimes purple-veined; outer surface white with a darkened central part; claw 2— 3 mm long, green. Wings 6—8 × 2.5—3.5 mm, oblong, shorter than keel, apex obtuse; outer surface white, proximal part pale green; inner surface sometimes purple-veined; auricle 1—1.5 mm long, triangular, white or flushed green; claw 2-2.5 mm long, pale green. Keel (Fig. 2A) 8-9 × 3—3.5 mm, apex obtuse; distal part of inner surface red-purple, proximal part white or pale green; auricle c. 1 mm long, triangular, white or pale green; claw 3—4 mm long, pale green. Stamens 6.5-8.5 mm long; dorsal filaments connate for c. ¾ of length, outer stamens free for c. 2 mm. Pistil 8.5—10 mm long, exserted beyond stamens; style bearded on upper surface, ovary glabrous; ovules 8-10. Pods 12-18 × 4-5.8 mm, broad-elliptic, laterally compressed, spreading, dark brown, grey-brown, or yellow-brown, both valves partially dehiscent and remaining attached to lower replum; beak 3-6 mm long, on adaxial suture or in central apical position, stout, pungent-tipped. Seeds 2—3.5 × 1.7—2.5 mm, broad-elliptic, reniform, oblong-reniform or rounded, 2-5 per pod, off-white with black or dark purple mottling. Chromosome number In - 32 (Slade 1953). FL Nov-Jan, FT Jan-Jun.

Shrub, up to 3(-8) × 2-3 m. Branches up to 100 mm diameter, ascending and horizontal. Cladodes 40-250 × 1-2.3 mm, erect and spreading, often divaricate, linear, striate, compressed, green, frequently hairy when young, glabrous when mature, apex subacute; leaf nodes 5—14(—19) mm. Leaves 1—7-foliolate, present on seedlings and adults, terminal leaflet larger; lamina 2-13 × 1-8(-13) mm, obovate to broad-elliptic, rarely orbicular, fleshy, green, adaxial and abaxial surfaces hairy or glabrous, apex emarginate, base cuneate; petiole 5—25 mm long, glabrous or hairy, green; petiolule < 0.3 mm long, glabrous or hairy, light green. Leaves on cladodes reduced to scales, < 0.8 mm long, broad-triangular, glabrous, apex acute. Stipules c. 1 × c. 1 mm, free, triangular, adaxial surface glabrous, abaxial surface hairy, apex subacute, margin hairy. Inflorescence a raceme, 1 per node, each with (4—)8-40 flowers. Peduncle 4— 10 mm long, glabrous, green. Bracts < 0.8 mm long, triangular, glabrous, brown, apex acute to subacute, margins hairy. Pedicel c. 1 mm long, glabrous, green. Bracteoles < 0.5 mm long, at top of pedicel or on receptacle, green and sometimes flushed red, glabrous, apex obtuse, margin hairy. Calyx 1.5-2 × 1— 1.2 mm, campanulate, green, outer surface glabrous. Calyx lobes 0.2—0.3 mm long, triangular, green and usually flushed red, inner surface hairy, appressed to corolla, apex subacute to obtuse. Standard 3.5-4 × 2.5-3.5 mm, broad-obovate, patent, positioned towards front of keel, keeled, apex emarginate, margins flattened; central part of inner and outer surfaces purple or red-purple, margins white, sometimes purple-veined; claw c. 1 mm long, pale green. Wings 3.5—4 × 0.9—1.1 mm, oblong, similar in length to keel, inner and outer surfaces white, sometimes purple-veined, apex obtuse; auricle 0.2-0.4 mm long, triangular, white, apex obtuse; claw 1.3— 1.5 mm long, pale green. Keel (Fig. 2D) 3.5-4 × 1.4— 1.7 mm, apex obtuse; distal area of inner surface purple, proximal area white; outer surface white, flushed purple in distal part and sometimes purpleveined; auricle 0.2—0.4 mm long, triangular, white, apex obtuse; claw 1.3—1.5 mm long, pale green. Stamens 3.5-4 mm long; dorsal filaments connate for c. 7/8 of length, outer stamens free for 0.2—0.5 mm. Pistil 3.7-4.2 mm long, exserted beyond stamens, glabrous; ovules 4-9(—11). Pods 5-9 × 1.5-3 mm, oblong, broad-elliptic or ovate, laterally compressed, erect, light grey or brown, valves dehiscent in distal part; beak 1-2.5 mm long, in a central apical position, stout, pungent-tipped. Seeds 2-3.7 × 1.6— 2.4 mm, broad-oblong to broad-elliptic, 1-3 per pod, laterally compressed, surface with 1—3 ridges, testa thin and membranous, light brown or tan. FL (Sep-)Dec-Feb, FT Jan-May(-Sep).

Ascending, spreading, or prostrate shrub, up to 2.5 × 2 m. Branches 10— 100 mm diameter, stout, ascending, spreading, or prostrate. Cladodes 30-150 × 1-3.5 mm, erect to spreading, linear, striate, terete, or compressed, green, yellow-green, or bronze-green, stout or slender; apex obtuse or subacute, often pungent-tipped, yellow, yellow-green, or green; leaf nodes 4—11. Leaves 1-3-foliolate, present on seedlings, usually absent on adults, terminal leaflet larger; lamina 2.5- 12 × 2-7.5 mm, obovate, fleshy, green, adaxial surface glabrous or hairy, abaxial surface hairy, apex emarginate, base cuneate; petiole 2-13 mm long, glabrous or with few scattered hairs, green; petiolule < 1 mm long, glabrous, light green. Leaves on cladodes reduced to scales, < 0.5 mm long, broadtriangular, hairy on adaxial surface, apex subacute. Stipules c. 0.5 × c. 1 mm, free, triangular, apex subacute, margin hairy, adaxial surface glabrous or with few scattered hairs, abaxial surface with few scattered hairs. Inflorescence a raceme, 1—2(—3) per node, each with (3-)6-9 flowers. Peduncle 3-20 mm long, hairy, green and often flushed red. Bracts < 1 mm long, triangular, glabrous or sparsely hairy, green or red-green, apex acute to subacute, margin hairy. Pedicel 1.5-2.5 mm long, hairy, pale green. Bracteoles < 0.5 mm long, on receptacle or pedicel, green, hairy, apex subacute, margin hairy. Calyx 2 - 3 × 1.5—1.8 mm, campanulate, green, outer surface hairy and sometimes flushed red. Calyx lobes < 0.5 mm long, triangular, green and usually flushed red, glabrous or hairy, appressed to corolla, apex acute. Standard 4.5—5 × 5.5—6 mm, broad-obovate, patent, positioned in central part of keel, keeled, apex emarginate, margins incurved; inner surface white with various shades of red-purple, veins red-purple, margin often white; outer surface white, often darkened in central part; claw c. 2 mm long, pale green. Wings 4.5—5 × 1.5-2 mm, oblong, exserted beyond keel, white with distal part red-purple and proximal part pale green, apex obtuse; auricle < 0.5 mm long, triangular, pale green; claw c. 1.5 mm long, pale green. Keel (Fig. 2C) 4.5-5 × 1.5-2 mm; distal part red-purple, proximal part white or pale green; auricle c. 0.5 mm long, triangular, pale green, apex obtuse; claw 1.5-2 mm long, pale green. Stamens 4.5-5 mm long; dorsal filaments connate for c. ¾ of length, outer stamens free for c. 1 mm. Pistil 4.7- 5.2 mm long, exserted beyond stamens, glabrous; ovules 6—8; stigma with a fringe of hairs below. Pods 5.5-9.5 × 2.5-4.2 mm, broad-elliptic, oblong, broadoblong, or obovate, laterally compressed, usually pendulous or rarely spreading, light grey or brown; valves dehiscent along upper suture and distal and proximal parts of lower suture, usually long persistent but sometimes dehiscing completely; beak < 1 mm long, on upper suture or occasionally in a central apical position, stout, pungent-tipped. Seeds 1.8-2.6 × 1.2-2 mm, broad-elliptic, reniform, or oblong, 1—4 per pod, green or green-yellow with black mottling, quickly abscising from funicle. Chromosome number 2n = 32 (Slade 1953). FL Nov-Jan, FT Jan-May.

Upright and spreading shrub, up to 2-4 × 2—4 m. Branches 50-100 mm diameter, stout, ascending or spreading. Cladodes (130-)180-380 × (5—)8-12 mm, linear, striate, compressed, yellow-green or green, glabrous, apex obtuse; leaf nodes 7—16. Leaves 1—3-foliolate, present on seedlings and rarely on adult plants, terminal leaflet larger; lamina 6-23 × 5-15 mm, elliptic, obovate to broad-elliptic, fleshy, green with yellow marking on proximal part, terminal leaflet larger than lateral leaflets, adaxial surface glabrous, abaxial surface with scattered hairs, apex refuse, base cuneate; petiole 5—15 mm long, with scattered hairs; petiolule 1- 5 mm long, with scattered hairs. Leaves on cladodes reduced to scales, < 1 mm long, broad-triangular, abaxial surface with scattered hairs and becoming glabrous with age, apex subacute. Stipules c. 1.5 × c. 1 mm, free, broad-triangular, sometimes with a second pair of smaller denticles, adaxial surface glabrous, abaxial surface with scattered hairs, apex subacute, margin with scattered hairs. Inflorescence a raceme, often in fascicles of 3 or 4 per node, each with (1-)2-4(-5) flowers. Peduncle 1-6 mm long, hairy, green. Bracts 1—1.4 × 0.8-1.5 mm, narrowtriangular to broad-triangular, abaxial surface and margin hairy and becoming sparsely hairy or glabrous with age, apex subacute to obtuse. Pedicel 4— 8 mm long, hairy, pale green. Bracteoles 0.4-0.6 × c. 0.2 mm, narrow-triangular to linear, on pedicel, abaxial surface glabrous, or hairy and becoming glabrous with age, apex subacute, margin hairy. Calyx 8—9 × 4.7-5.5 mm, campanulate, green, outer surface glabrous. Calyx lobes triangular, green and usually flushed red, inner surface and margin hairy, appressed to corolla, apex acute. Bud green, becoming yellow-green at maturity. Standard 18-22 × 11— 13.5 mm, ovate, patent, keeled, margins incurved, positioned in proximal part of keel, apex subacute or often weakly retuse, yellow to pale yellow with central part of inner surface and marginal veins maroon-red; claw 8-9 mm long, green. Wings 20- 22 × 4-4.5 mm, oblong, falcate, shorter than keel, yellow to pale yellow, apex subacute, margin with a few scattered hairs; auricle 3.5-4.5 × 1.5—2 mm, oblong, pale yellow; claw 5.5-6 mm long, pale green. Keel (Fig. 2F) 25—27 × 7-8 mm, apex narrow and acute, yellow, distal part of inner surface maroon- red; auricle c. 1.5 × c. 1.5 mm, triangular, yellow- green, apex rounded; claw 9—10 mm long, pale green. Stamens 28—30 mm long; dorsal filaments connate for c. Vt of length, outer stamens free for 6— 11 mm. Pistil c. 32-33 mm long, exserted beyond stamens, glabrous except for a small tuft of hairs on inner surface below stigma; ovules (12—) 14-16(-17). Pods 23-34 × 6-12 mm, oblong to oblanceolate, laterally compressed, spreading, light to dark brown, valves dehiscent; beak 2-4 mm long, in central apical position, stout, pungent-tipped. Seeds 3-5 × 2 - 3 mm, reniform to oblong-reniform, (5—)8—15 per pod, dull red to orange-red and sometimes with black mottling, often remaining attached to funicle. Chromosome number 2n = 32 (Slade 1953). FL May-Nov, FT Oct-May.