328 



63— NEYRAUDIA. 



] . N. madagascariensis, Hook.f. ; Arundo madagascariensis, Kunth ; 

 Benth. Fl. Hongk. 427. Common in Hongkong ; Canton ; 

 Whampoa ; Macao. Fl. November. 



64-.— PHRAGMITES. 



Key to species. 



Panicle and glumes not spreading much 

 Panicle and glumes widely spreading. . . 



1. communis. 



2. Karha. 



1. P. communis, Trin. ; Hook. f. Fl. Brit. Ind. vii. 303. Near 



Canton ; banks of the Canton River. Fl. October. 



2. P. Karka, Trin. ; Hook. f. 1. c. 304. Muddy bank near Chaiwan, 



Hongkong ; in mud, Lantao Island and Castle Peak, 

 Hongkong New Territory ; muddy banks of the Canton 

 Eiver. Fl. October. 



65.— ERAGROSTIS. 



Key to species. 



1. Spikelets not ^^ vach long, very 



numerous in a narrow but speading 

 panicle, axis of spikelets articulate 

 Spikelets ^-^ inch long, axis not 

 articulate ... 



2. Paleae glabrous 

 Paleae ciliate with long spreading hairs 



3. Leaves very hairy 

 Leaves glabrous or nearly so ... 



4. Unopened spikelets more than -^^ '^t^^ 



broad 

 Unopened spikelets less than y^ inch 

 broad 



5. Many spikelets sessile or subsessile ... 

 Spikelets never sessile or subsessile ... 



6. Panicle cylindric 

 Panicle more or less diflpiise 



7. Panicle branches short spreading 

 Panicle branches long erect ... 



8. Many spikelets sessile ... 

 Few spikelets if any sessile 



9. Spikelets usually brown or purple 

 Spikelets usually green 



10. Leaves narrow involute 



Leaves ^ inch or wider, flat ... 



1, E. interrupta, Beauv. ; E. tenella. Be 



Hongkong without locality ; Lantao Island, Hongkong 

 ^ New Territory ; Canton ; Whampoa ; North River. Fl. 

 December, 



