78 



14.— ARAOHIS. 



1. A. hypogaea, Linn.; DC. Prodr. ii. 474. Cultivated in 

 Hongkong and Kwangtung. Fl. yellow, June. 



15.— ZORNIA. 



1. Z. diphylla, Pers. ; Benth. Fl. Hongk. 80. Victoria Peak, 

 Mt. Gough and Stonecutters' Island, Hongkong ; Lantao 

 Island, Hongkong New Territory ; near Chaochaufu ; 

 Macao ; Pakhoi. Fl. yellow, April. 



16.— DESMODIUM. 



Key to species. 



1. Pod crenate on one side, not articulate ; 



leaflets 3, terminal largest 

 Pod articulate ... 



2. Erect shrub 



Perennial herb, sometimes woody below 



3. Leaves 1-foliate 

 Leaves 3-foliate 



4. Bracts persistent, orbicular ... 

 Bracts elongate, small, deciduous 



5. Pod silky, joints usually 3 

 Pod subglabrous, joints 1-2 



6. Inflorescence axillary ... 

 Inflorescence terminal ... 



7. End leaflet 4-6 times as long as broad ; 



pod subglabrous 

 End leaflet 2-3 times as long as broad ; 

 pod pubescent 



8. Leaves 1-foliate 

 Leaves 3-foliate 



9. Leaves glabrous above 

 Leaves downy above ... 



10. Leaves rotundate 

 Leaves oblong ... 



11. Inflorescence on very short axillary 



branches ; leaves small ; stems pro- 

 cumbent 

 Inflorescence terminal ... 



12. Peduncles axillary, 3-flowered 

 Peduncles some or all racemose 



13. Leaflets small, obtuse ; racemes short 

 Leaflets large, attenuate ; racemes very 



long , 



14. Peduncles all racemose 



Peduncles 3-flowered and racemose ... 



15. Leaflets membranous ... 

 Leaflets coriaceous 



16. Pod little indented 

 Pod deeply partite 



1. gyroides. 



2. 

 3. 

 7. 



2. triquetrum. 



4. 

 5. 

 6. 



3. elegans. 



4. pulchellum. 



5. Cephalotes. 



6. laburnifolium. 



7. gyrans. 



1. gyroides. 

 9. 

 11. 

 10. 



8. latifolium. 



9. retroflexum. 



10. gangeticum. 



12. 

 13. 



11. trijlorum. 



14. 

 15. 



16. 



12. parvifolium. 



13. heterophyllum» 



14. polycarpum. 



15. reticulatum. 



16. laxiflorum. 



17. 



