318 



20.— ARUNDINELLA. 



Key to species. 



1. Glume IV 3-awned 2. 



Glume I^' 1-awned ... ... ••• 3. 



2. Glumes i and li 3-nerved ... ... 1. setosa. 



Glumes I and il subequal, with three 



strong and three weak nerves ... 2. sinensis. 



3. Awn twice the length of the spikelet... 3. nepalensis. 

 Awn Scarcely exceeding the spikelet... 4. anomala. 



1. A. setosa, Trin, ; Benth. Fl. Hongk. 416. Aberdeen, Hong- 



kong ; Canton ; Lienchow Eiver. Fl. July. 



2. A. sinensis, Rendle in Hemsl. Enum. PI. China, iii. 342. 



Lofoushan. Fl. . 



3. A. nepalensis, Trin. ; Benth. 1. c. 416. Hongkong without 



locality ; Imtintsai, Hongkong New Territory ; White 

 Cloud hills, Canton ; Lappa Island, near Macao. Fl. 

 November. 



4. A. anomala, Steud.Sjn. Gram. 116. Canton. Fl. Summer. 



2 1 .— TH YS ANOLAENA. 



1. T. Agrostis, Nees ; T. acarifera. Am. et Nees ; Benth. Fl. 

 Hongk. 417. Common in ravines, Hongkong ; foot of 

 Phoenix Mt., Swatow. Fl. April. 



22.— PEROTIS. 



1. P. latifolia, Ait. ; Hook. f. Fl. Brit. Ind. vii. 98. Deepwater 

 Bay, Hongkong ; Macao ; Pakhoi. Fl. July. 



23.— ZOYSIA. 



Key to species. 



Spikelets ^ inch long ... ... ... 1. sinica. 



Spikelets 3^2 inch long ... ... ... 2. pungens. 



1. Z. sinica, Hance ; Z. pungens, Munro ; Benth. Fl. Hongk. 418. 



Hongkong without locality ; Castle Peak, Hongkong New 

 Territory ; Pakhoi. Fl. May. 



2. Z. pungens, Willd. ; Hook. f. Fl. Brit. Ind. vii. 99. Near 



Chaochaufu. Fl. May. 



24.— IMPERATA. 



1. I arundinacea, Cyrill. ; Hook. f. Fl. Brit. Ind. vii. 106. 

 Common in Hongkong ; Castle Peak and Tin-tso-ngam, 

 Hongkong New Territory ; hills near Chaochaufu ; 

 Ookaisa. Fl. October, 



