GRAMINE^E. 65 



VI. Difjitaria RICH. 

 Key to the species. 



1. Spikes in terminal pairs more than 10 cm. long 1. I), barlata. 



Spikes digitate 2 



2. First glume very minute or sometimes reduced, second glume nearly 



equalling the third 3 



4. D. Henryi. 

 First glume very minute or entirely reduced, second 



5. D. formosana. 

 glume shorter than the third 



6. D. sanguinale. 



3. Spikes 9-10 cm. long 2. violascens. 



Spikes nearly 5cm. long 3. longiflora. 



D. Henryi, D. formosana, D. sanguinalis, and several varieties of the 



latter are very difficult to he distinguished one from another, and differences 

 between them are in nearly all cases very slight and of accessory characters. 



1. Digitaria barbata WILLD.; MATSUM. et HAYATA Enum PI. Formos. 

 p. 507. 



Panicum Jieteranthum NEES. 



2. Digitaria violascens LINK.; HAYATA Gen. Ind. Fl. Formos. p. 95. 

 Panicum violascens KUNTH ; MATSUM. et HAYATA Enum. PI. Formos. p. 



506. 



3. Digitaria longiflora PERS.; REXDLE, in HEMSL. Ind. Fl. Sin. III. 

 p. 324. 



Panicum parvulum TRIX.; MATSUM. et HAYATA Enum. PI. Formos. p. 

 504. 



4. Digitaria Henryi REXDLE ; MATSUM. et HAYATA Enum. PI. Formos. 

 p. 507. 



5. Digitaria formosana REXDLE ; MATSUM. et HAYATA Enum. PI. 

 Formos. p. 507. 



6. Digitaria sanguinalis SCOP.; MATSUM. et HAYATA Enum. PL 

 Formos. p. 507. 



VII. IdmantJius BEAUV. 



Ichnanthus pallens MUXRO ; MATSUM. et HAYATA Enum. PI. Formos. 

 p. 506. 



