5o 



THE TRIBES AND THEIR GENERA. 



CHLORIDES. 



Spikes digitate ; spikelets small. Cynodon, 47 

 Spikes upright ; spikelets large. Spar Una, 48. 



Cynodon dactylon. 

 Floret. For Spikelet see p. 91. 



Cynodon. Spikes digitate, 

 radially divergent. Spikelets 

 small, in two series, on one side 

 of the spike, awnless. Florets one. 

 Glumes nearly equal, narrow, 

 patent, persistent. Outer palea 

 longer and broader than glumes, 

 ciliate on keel, compressed, em- 

 bracing inner palea. Stamens 

 three. Styles long, distinct. Stig- 

 mas feathery, protruding from 

 sides of spikelets. 



Species. C. dactylon, 47. 



Spartina. Spikes two or more, usually upright. Spikelets 

 generally awnless, large, compressed, falling entire. Florets 

 one, sessile. Glumes boat-shaped, 

 compressed, converging, very un- 

 equal ; outer glume broad and 

 striated, inner glume lanceolate. 

 Outer palea nearly as long as 

 longer glume, linear, compressed, 

 narrowing to a point at apex. 

 Inner palea about as long. Lodi- 

 cules none. Stamens three ; fila- 

 ments slender, anthers long. Ovary 

 narrow and pointed. Styles thin, 

 longer than filaments, united half 

 way up. Stigma short, feathery. 

 Grain compressed. 



Species. S. sit iota, 48. 



Floret. 



Spartina stricta. 



Fur Spikelet sec p. 137. 





