POA TRIVIALIS. 121 



POA TRIVIALIS. 



LINNAEUS. HOOKER AND ARNOTT. SMITH. PARNELL. KOCH. 



GREVILLE. KUNTH. LINDLEY. WILLDENOW. CURTIS. 



KNAPP. SINCLAIR. SCHRADER. HOST. DEAKIN. MACREIGHT. BABINGTON. 



RALFS. 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 

 -LJL soils. 



Common throughout England, Scotland and Ireland. Found in 

 France, Italy, Germany, Spain, Portugal, Prussia, Denmark, Switzer- 

 land, 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. Inflorescence panicled; panicle upright; 

 branches spreading, rough, basal ones in threes or fives. S pikelets 

 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 paleae; 

 exterior one of basal floret five-ribbed, the base furnished with a 

 delicate web suspending the calyx. Inner palea having two green, 

 marginal, fringed ribs. 



