xlviii 



INTRODUCTION. 



Sect. I. Grasses with 2 Stamina, 2 Sti/ks, Calyx containing 1 Bower. 



ANTHOXANTHUM. Vernal-grass. Generic character: calyx, husk of 2 valves, contaming 1 flower. Blossom or 



corolla, husk 2 valves, tapering to a point. 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. E. Bot. 647. 



amarum, per. bitter; nat. Morocco, introduced 



Flowers in May. 



NARDUS. 



Sect, II. Grasses with 2 Stamina, 1 Style, and the Calyx X-Jlowered. 



Mat-grass. "Generic character : corolla 2-valved, calyx wanting. Seed, linear, oblong. 



^ ■ - ' 



ztTicta, per. upright mat-grass, indig. Flowers in June and July. E. Bot. 290. 



ERIOPHORVM. 



Jiliformis, ann. slender mat-grass ; nat. Portugal. Flowers in June, 



aristata, ann. See Rotthoellia monandra. 



Cotton-grass. Generic character : calyx, 1 valve, i-flowered ; flowers in an imbricated spike, 



exterior flower generally barren. Corolla, wanting, if the calyx valve be not considered 



such. Seed three-cornered, furnished with downy hairs. 



alpimim. 



per. alpine cotton-grass, indig. Flowers in April and May. E. Bot. 311. 



'Vaginatuyn, per. sheathed cotton-grass, indig. Flowers in April and June. E. Bot. 873. 



capifatum 



per. headed cotton-grass, indig. Flowers in June and July. E. Bot. 2387. 



triqiietrum, per. three-cornered cotton-grass ; nat. German3^ Flowers in May. Flo. Ger. i. 



152. 



angttstifoUum, per. narrow-leaved cotton-grass, indig, April and May. E. Polystachlon, 



. Curt. E. Bot. 564, 

 latifolium^ per. broad-leaved, indig. May* E. Bot, 563. E, Polystachion. 

 gracile, per. slender, indig. May. E. Bot. ^042. 



■ 



Sect. III. Grasses with 3 Stamina, 2 Styles, 1 Flower in each Calyx; Flowers bisexual, corolla 



of 1 Valve only. . ' 



Single-husked bent. Generic character: calyx 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 



TRICHODIUWL 



A LOPECURUS. 



covered by the husk. 



n ■ 'L 



caninum, per. brown, indig. July. 



Agrostis canina. Flo. Britan. I. p. 78. 



muticuniy 



per. snowy, indig. June. Agrostis nivea, Don.—Ynt. T.cammtm, Flo. Ger. 

 per. awnless, indig. July. Flo. Ger. Var. T. caninim, f. '' florihus mutidsr 

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



rupestre, per. rock, indig. June. Agrostis striata, Don. T. rupestre, Flo. Ger. 

 Fox-tail grass. Generic character : calyx, 2-valved, 1-flowered, valves united at the base. 

 Blossom 1 valve, with an awn proceeding from the base. 



pratensis, per. meadow fox-tail, indig. ]\Tay. Eng. Bot. 759. 

 genimlatus, per. jointed, indig. June. E. Bot. 1230. 

 var. bidbosus, per. bulbous-jointed. June. AVither. Arr. 



hulhosus^ 

 fulvus, 

 alpimts, 



agrestis, 



per. upright bulbous-rooted, indig. June. E. Bot. 1249. 



.tawny-coloured, indig. E. Bot. 1467. ■ ■ 



per. alpine, indig. April and May. E. Bot. 1126. 

 ann. slender, indig. June and July. E. Bot. 848. A. myosuroides, Curtis. 



utricrdatus, ann. inflated ; nat. Germ. Flowers in May and June. Flo. Ger. i. 174. 

 paniceus, ann. hairy, indig. Wither. Arr. ii. 121. FJowers in July. Bloss. 2 valves. 



