GRAMINEJS. 65 



VI. Digitaria RICH. 

 Key to the species. 



1. Spikes in terminal pairs more than 10 cm. long 1. D. barbata. 



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 be 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 lieterantlmm 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.; RENDLE, in HEMSL. Ind. Fl. Sin. III. 

 p. 324. 



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

 504. 



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

 p. 507. 



5. Digitaria formosana RENDLE ; MATSUM. et HAYATA Enum. PL 

 Formos. p. 507. 



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

 Formos. p. 507. 



VII. Ichnanthus BEAUV. 



Ichnanthus pallens MUNRO ; MATSUM. et HAYATA Enum. PL Formos. 

 p. 506. 



