230 



COMPABATITB ANALYSIS. 



Strida. 



TEIANDEIA. Monogynia 



• N AEDUS. 



Florets spiked, unilateral . 



TEIANDEIA. Diyynia. 



Alopectjetjs. 



1. Glumes not united 

 Glumes united at base. ... 2 



2. Spike ovate, inflated sheath of upper leaf thrioe as long as 



the leaf ..... Alpinus. 



Spike cylindrical, sheath not thrice as long as upper leaf 3 



3. Culm erect, glumes acute 

 Culm ascending, glumes obtuse 



4. Spike obtuse, awn twice length of corolla . 

 Spike acute, awn more than twice length of corolla 



5. Awn as long as the glumes 

 Awn longer than the glumes 



Phalaeis. 

 Spike dense, ovate .... 

 Panicle branched 



4 

 5 

 Pratensis. 



Fuhus. 

 Genioulatus. 



Ammophila. 



Glumes acute 



Arundinacea. 



Arundinacea. 



Phletoi. 



1. Glumes awnless, twice as long as the corolla . Arenarium. 

 Glumes mostly awned, not twice as long as the corolla . 2 



2. Glumes naked or downy (not ciliated) at the back . 

 Glumes ciliated at the back 



3. Culm mostly branched, glumes wedge-shaped 

 Culm simple, glumes lanceolate 



4. Glumes lanceolate, gradually tapering 

 Glumes truncated .... 



5. Spike ovate- oblong, awn as long as the glume 

 Spike cylindrical, awn shorter than the glume . 



Ovatus. 



Effasum. 



Lendigerum. 



3 



4 

 Tu?n. 

 Bxhmeri. 

 Miohelii. 



5 

 Alpinum. 



