295 



10. Nut ^ the length of the glume ... 1. compressus. 

 Nut nearly equal to the glume ... 7. Iria. 



11. Rachis of spikes pilose 8. pilosus. 



Rachis of spikes glabrous 12. 



12. Glumes forced apart by incurving of 



edges 9. malaccensis. 



Glumes adpressed ... ... ... 13. 



13. Spikelets 10-20-flowered 10. distans, 



Spikelets 20-40-flowered 14. 



14. Nut narrowly ellipsoid 11. eleminoides. 



Nut obovoid 12. procerus. 



15. Plants not stoloniferous 16. 



Plants stoloniferous ... ... ... 18. 



16. Glumes in fruit remote 13. Zollingeri. 



Glumes closely imbricate 17. 



17. Spikelets densely crowded 14. radiatus. 



Spikelets not crowded 15. exaltatus. 



18. Leaves reduced or wanting 16. tegetiformis. 



Leaves long and slender ... ... 19. 



19. Plant with woody ovoid tubers ... 17. rotundus. 

 Plant without tubers 18. stolonifer. 



1. C. compressus, Linn. ; C. B. Clarke in Hook. f. Fl. Brit. Ind. 



vi. 605. Whampoa ; common weed of cultivated ground, 

 Canton ; Macao. Fl. August. 



2. 0. unoinatus. Pair. ; C. cuspidatus, H. B. K. ; C. B. Clarke 1. c. 



598. Hongkong without locality ; Taimoshan, Hongkong 

 New Territory ; Whampoa ; Canton ; Macao. Fl. 

 September. 



3. C. radians, Nees ; Benth. Fl. Hongk. 386. Hongkong without 



locality ; Cape Syngmun (Capsuimun) Hongkong New 

 Territory ; Macao ; Pakhoi. Fl. September. 



4. C. diflfusus, Vakl ; C. B. Clarke 1. c. 603. Hongkong without 



locality ; Whampoa. Fl. July to August. 



5. C. diiformis, Linn. ; Benth. 1. c. 385. Hongkong without 



locality ; near Kowloon City, Hongkong New Territory ; 

 Swatow ; a common weed on the borders of paddy fields, 

 Canton. Fl. April — September. 



6. C. Haspan, Linn. ; Benth. 1. c. 386. Mt. Gough and in marshes 



in the Happy Valley, Hongkong ; Taimoshan, Hongkong 

 New Territory ; Canton ; Macao ; Pakhoi. Fl. March. 



7. C. Iria, Lin7i. ; Benth. 1. c. 386. In wet situations at East 



Point and Aberdeen, Hongkong ; Taimoshan, Hongkong- 

 New Territory ; on the borders of paddy fields, Canton ; 

 Macao ; Lienchow River. Fl. September. 



8. C. pilosus, Vahl ; Benth. 1. c. 387. Hongkong without 



locality ; Castle Peak, Taimoshan and near Lowu, Hong- 

 kong New Territory ; Whampoa ; Canton ; Macao ; 

 Lienchow River ; Lofoushan. Fl. September. 



9. C. malaccensis, Lam. ; C. B. Clarke 1. c. 608. Castle Peak 



and Kowloon City, Hongkong New Territory ; Whampoa ; 

 Macao. Fl. September. 

 10. C. distans, Linn. f. ; Benth. 1. c. 387. Mt. Gough,' Hong- 

 kong ; Macao ; Lofoushan. Fl. August. 



