21 



DIGITAlllA IIUMIFUSA. 



Peusoon. SMixn. Parnell. Hooker axd Arnott. Babincton. 



LiNDLEY. DeAKIN. 



PLATE LXXIII. 



Syntherisma fflahrum, Schrader. 



Panicim " Kocn. Gatjdix. 



Macreight. Kunth. 



" humifiisum, Kunth. 



" sanguinale. PoLLicir. 



Digitaria fdifurmis, Koel. 



The Glabrous Finger Grass. 



Digitaria — rrom a finger. Hmnifusa — Spreading ou tlie grouud. 



A RARE Grass, having no agricultural merits. Found on 

 sandy soil in Yorkshire, Norfolk, Suffolk, Surrey, and Sussex. 



A native also of France, Italy, Switzerland, Prussia, Holland, 

 and Belgium. 



Stem ascending, polished, striated, having four somewhat 

 broad, brief, flat leaves, with smooth striated sheaths; upper one 

 extending considerably beyond its leaf. Joints three. Inflor- 

 escence digitate, lengthy, linear, and from two to four-branched. 

 Spikelets oval, dorsally compressed, of two glumes and one 

 floret; glumes equal, hirsute, and five-ribbed; inner one deep 

 purple, the others only purplish. Floret of same length as 

 glumes — reddish purple, of two almost equal palero, striated 

 and polished. Filaments three; anthers brief, violet-coloured, 

 and cloven at either extremity. Styles two, slender. Stigmas 



