121 



POA TFJVIALIS. 



LiNNiEus. Hooker and Arnott. Smith. Parnell. Koch. 



Geeville. Kxtnth. Lindley. "Willdenow. Ccrtis. 



Knapp. Sinclair. Schrader. Host. Deakin. Macreight. Babington. 



Ealfs. Hudson. Withering. Hull. Relhan. Sibthorp. Abbot. 



PLATE XXXVIII. 





Poa dubia, 



Leers. 



" scabra, 



Ehrhart. 



" setacea, 



Hudson. 



The Roughish Meadow- Grass. 



Poa — Grass. Trivialis — Trivial. 



A valuable agricultural Grass for moist, rich, and sheltered 

 soils. 



Common throughout England, Scotland, and Ireland. Found 

 in France, Italy, Germany, Spain, Portugal, Prussia, Denmark, 

 Switzerland, Sweden, Norway, Lapland, Iceland, Asia, and 

 North America. 



Stem upright, base decumbent, circular and rough, bearing 

 five or six thin, flat, acute, rough leaves, with rough, striated 

 sheaths; upper one much longer than its leaf, and having a 

 lengthy pointed ligule at the apex. Joints smooth. Inflores- 

 cence panicled; panicle upright; branches spreading, rough, 

 basal ones in threes or fives. Spikelets ovate, compressed, and 

 of two to five awnless florets; apex of basal floret stretching 

 slightly beyond the large glume of the calyx. Calyx of two 

 equal, acute glumes, upper one three-ribbed, lower one destitute 

 of lateral ribs. Dorsal ribs strongly dentate. Florets of two 



