HORTUS GRAMINEUS WODURN EN S13. 25 



ERIOPHORUM capitatum, per. headed cotton-grass, indig. 



Flowers iu June and July. 

 gracile, per. three-cornered or slender cotton-grass ; indig. 



Flowers in May. 

 angustifolium, per. narrow-leaved cotton-grass, indig. 



April and May. 

 polifstnchion, per, broad-leaved, indig. May. 

 pubescetis, downy-stalked cotton-grass, indig. 

 Virginkum, per. Virginian, nat. Canada. 

 strict urn, per. upright. 



Sect. III. — Grasses with two stamina, two styles, calyx con- 

 tainutg one Jiower. 



ANTHOXANTHUM. Vernal grass. Generic character : 

 calyx, husk of two valves, containing one flower; corolla, 

 husk two 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. 

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

 crinitum. See Agrostis crinila. 



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

 April and May. 



Sect. IV. — Grasses with three stamina, two styles, onejloiver 

 in each calyx ; Jiower s hiseiual, corolla of one valve only, 

 except Aristida, with a second valve of the corolla very 

 inconspicuous. 



TRICHODIUM. Single-husked bent. Generic character : 

 calyx two-valved ; corolla one 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. 



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



niveum, per. snowy, indig, June. 



niuiicum, per, awnless, indig. July. 



alpinum, per. alpine; nat. Gerui. 



