48 HORTUS GRAMINEUS WOBURNENSIS. 



ERIOPHORUM polystachion, per. broad-leaved, indig. May. 



E. Bot. 563. E. Polystachion. Sm. Engl. Fl. 67. 

 pubescens, downy-stalked cotton-grass, indig. Sm. Engl. Fl. 



p. 68. April. 

 Virginicum,per. Virginian, nat. Canada, Georgia. R. S. Linn. 



Syst. Veg. ii. p. 159. 

 strictum, per. upright. Brown, MSS. R. F. M. S. 



SficT. III. — Grasses with 2 Stamina, 2 Styles, Calyx containing 



1 Floiver. 



ANt'rtOX ANTRUM. Vernal-grass. Generic character : calyx, 



husk of 2 valves, containing 1 flower ; corolla, husk 2 valves, 



awned; seed-vessel, the husks of the corolla adhere to the 



seed ; seed nearly cylindrical, tapering at each end. 



odoratum, per. sweet-scented vernal-grass, indig. Flowers in 



April and May. Sm. Engl. Fl. i. p. 37. E. Bot. 647. 

 amarum, per. bitter, nat. Morocco. Flowers in May. Hort. 



Gram. Fo. 6. 

 crinitum. See Agrostis crinifa. 



alpinum, per. alpine sweet-scented vernal grass, nat. (?) Cult. 

 Hort. Wob. April and May. 



Sect. IV. — Grasses with 3 stamina, 2 Styles, 1 Flower in each 

 Calyx ; Floivers bisexual, corolla of \ valve only, except Aristida, 

 with a secoiid valve of the corolla very inconspicuous. 



TRICHODIUM. Single-husked bent. Generic character : ca/j/a^ 



2-valved ; corolla 1 valve, smaller than the calyx, awned or 



awnless, furnished with a tuft of hairs on one side of its base; 



seed covered by the husk. 



caninum, per. brown, indig. July. Agrostis canina. Flo. 



Britan. i. p. 78. 

 Kitaibilii, per. slender, sub-alpine places, Pannoni. Schult. 



Flo. Austr. ed. 2, i. p. 165. 

 niveum, per. snowy, indig. June. Agrostis nivea, Don. — Var. 

 T. caninum. Flo. Ger. Hort. Gram. Fo. 153. Agrostis 

 nivea. 

 muticum, per. awnless, indig. July. Flo. Ger. Var. T. cani- 

 num, f. "Jioribus muticis." Hort. Gram. Fo. 227. 

 alpinum, per. alpine ; nat. Germ. July. Flo. Ger. i. 200. 



