﻿GRASSES OF SCOTLAND. 



NINETY-FOUR SPECIES. 



CLASS MONOCOTYLEDONES. 



Stem with no distinction of bark, wood, and pith ; increasing in 

 the centre, so that the oldest formation is external. Leaves with pa- 

 rallel veins. Cotyledon one ; radicle inclosed in a sheath. 



ORDER GRAMINEJ3 of Jussieu. 



Root fibrous, creeping, or bulbous. Stem cylindrical, hollow, clos- 

 ed at the joints, bearing leaves with a split sheath, through which the 

 stem passes. 



Inflorescence spiked, racemed, or panicled. Flowers or spikelets con- 

 sisting of a calyx containing one, two, or many florets. 



Calyx situated the most external, composed of two glumes, rarely 

 of one only, or entirely wanting ; the upper glume generally the 

 largest 



Florets of two palese, seldom of only one, {corolla, Linn, perianth, 

 Brown,) the outer the largest, generally keeled, having one, three, 

 five, or many longitudinal ribs ; often bearing from the summit, back, 

 or base, an awn of various lengths ; the inner palea with usually two 

 distant, fringed ribs, each at a lateral fold. 



