BROMUB DIANDRUS. 171 



BROMUS DIANDRUS. 



CURTIS. PARNELL. HOOKER AND ARNOTT. SMITH. 



KNAPP. GRAVES. SINCLAIR. BABINGTON. REICHENBACH. 



RALFS. DEAKIN. 



PLATE LVII. B. 



Bromus Madrittnsts, LINN.^US. WILLDENOW. 



" " SCHRADER. HOST. KOCH. 



" WITHERING. MACREIGHT. 



" " KUNTH. 



gynandrus, ROTH. 



" rigidus, ROTH. 



muralis, HUDSON. 



ciliatus, HUDSON. 



Festuca Madritensis, DESFONTAINES. 



The Upright Annual Brome-Grass. 

 Bromus Food. Diandrus ? 



A RARE species, growing chiefly on rocks and walls, and on dry 

 J_JL_ soils. 



In England it occurs in the counties of Devon, Somerset, Gloucester, 

 Hampshire, Surrey, Kent, Worcester, and Durham. In Scotland it 

 has been found on the Fifeshire coast, and near Edinburgh. Abroad 

 it occurs in France, Italy, Germany, and Switzerland. 



Stem upright, circular, and polished, having three or four flat, linear, 

 acute, hairy leaves, with striated sheaths. Upper sheath downy, having 

 a short, blunt, ragged ligule; lower sheath hairy, the hairs pointing 

 downwards. Joints four, smooth. Inflorescence racemed. Raceme 

 upright and compact. Spikelets commencing direct from the rachis, 

 on short footstalks, the basal ones mostly in twos or threes; generally 

 of eight awned florets, brownish purple in colour. Calyx of two un- 



