594 



XLVII. LEGUMINOS^. 



[Derris. 



anthers versatile. Ovary sessile; ovules few; style incurved 

 filiform. Pod thin flat, indehiscent oblong (i-seeded) strap-like 

 (few-seeded) winged on upper or lower sutures. About 40 species, 

 tropics. 



Standard withoul calli at base : — 



Vexillary stamen free throughout; flowers 

 panicled (§ Aganope). 

 Pod winged on the upper edge only and 

 sinuate; flowers "5 in. long; green and 

 white . . . . 



Pod winged both sides ; flower under '3 in. 

 long, white . . . 



Vexillary stamen united with the others ; 

 flowers fascicled on tumid nodes (§ 

 Eu-derris). 

 Pods winged along upper edge only; narrow 

 pointed with ends ; seeds several. 

 Climber ; flowers white in long narrow 

 panicles, white ..... 



Tree ; leaflets numerous, 25 to 30 ; flowers 

 in dense panicles, violet 

 Pods sub-orbicular or oblong ; seeds few ; 

 climbers. 

 Pods glabrous ; flowers pale pink 

 Pods pubescent ; flowers white, tipped pink 

 Pods winged on both edges. 



Flowers white ...... 



Flowers pink ...... 



Standard with 2 calli on the base. 

 Leaves and pink petals pubescent 

 Leaves and pink petals glabrous 



Pod thick woody unwinged dehiscent; fruit 

 unknown ...... 



Flowers in slender racemes .... 



(i) D. sinuata 

 (2) D. thyrsiflora 



(3) D. scandens 



(4) D. dalbergioides 



(5) D. uliginosa 



(6) D. elegans 



(7) D. affinis 

 (S) D. amoena 



(9) D. elliptica 



(10) D. malaccensis 



var. aptera 



(11) D. Yappii 



(i) D. sinuata Thw. Enum. PI. Zeyl. 93 ; Baker, in Hook. fil. 

 F.B.I, ii. 246; Prain, I.e. 98. 



Woody sarmentose shrub. Leaves 10 to 16 in. long; leaflets 

 5 to 7, coriaceous, glabrous ovate to ovate-oblong, shortly cuspidate 

 blunt, base round or deltoid ; nerves 5 to 7 pairs, 4 to 5 in. long, 

 2 to 3 in. wide. Panicles of long racemes 6 to 12 in. long. Flowers 

 distant ; pedicels '2 in. decurved. Calyx cup-shaped, silky '2 in. 

 long, green. Corolla •6 in. long ; keel and wings white ; standard 

 orbicular, "5 in. wide, base cordate, apple green, ecallose. Stamens 

 diadelphous, vexillary one free to base. Ovary pubescent. Pod 

 strap-shaped, sinuate between the seeds, upper suture narrow- 

 winged, 4 to 8 in. long, 1-5 in. wide. Hab. Tidal rivers, common. 

 Singapore, Yo Chu Kang; Pulau Ubin. Malacca (Griffith). 

 Pahang, Kwala Lipis (Machado) ; Rumpin River (Evans). Distrib. 

 India, Ceylon, Indo-China, Malaya. 



(2) D. thyrsiflora Benth. Journ. Linn. Soc. iv. Supp. 114; 

 Baker, I.e. ii. 246 ; Prain, I.e. Ixvi. 99. 



Sarmentose bush rarely climbing. Leaves 8 to 15 in. long; 



