68 HORTUS GRAMINEUS WOBURNENSIS. 



STIPA hymenoides, per. nat. America. S. membramcea, Pursh. 

 elegantissima, per. most elegant, nat. Van Diemen. Brown. 

 pubescens, per. downy, nat. Port Jackson. Brown. 

 micrantha, smooth-seeded, nat. N. Holl. Brown. 

 setacea,per. bristly, nat. N. Holl., ibid. 

 compressa, per. flat-stalked, nat. N. Holl., ibid. 

 Ucranica, per. tufty-leaved. R. S. Linn. Sys. Veg. i. p. 340. 

 strict a, per. upright, nat. Carolina, ibid. 

 panicoides, per. panic-like, nat. S. Amer., ibid. 341. 

 LAPP AGO. Lappago. Generic character: calyx 3-valved ; 

 corolla 2-valved, valves inverse or resupine ; seed covered 

 loosely by the corolla. Tragus, R. S. L. Sys. Veg. i. p. 378. 

 racemosa, branching lappago, nat. South of Europe. August. 

 Hort. Kew. i. p. 182. Tragus racemosus, R. S. Linn. Sys. 

 Veg. i. p. 378. 



ROTTBOELLIA. Hard-grass. Generic character : spike-stalk, 

 or rachis, jointed, roundish, excavated in which the florets 

 are wholly or partly immersed ; calyx 1 or 2-valved, lateral, 

 containing 1 or 2 flowers ; Jlowers alternate, on a zig-zag 

 foot-stalk : seed covered by the blossom. 

 incurvata, ami. sea hard-grass, indig. Flowers in June. E. 



Bot. 760. Sm. Engl. Fl. i. p. 175. 



filiformis,per. slender, nat. S. Europe. July. Willd. 315. 

 monandra, arm. single hard-grass, nat. Germ. May and June. 



Flo. Ger. i. 411. Nardus aristata, Willd. 

 digitata, per. fingered, nat. Greece. Fl. Gr. i. p. 71. n. 249. 



Smith. 

 cylindrica, per. four-rowed, nat. S. of Europe. August. Willd. 



Spec. 464. 



lav is, per. smooth-calyced, nat. Tranquebar. 

 Tliom&a. See Nardus Thom&a. 

 compressa, compressed-spiked, nat. Sierra Leone. 

 stolonifera, per. creeping, nat. ? R. S. Linn. Sys. Veg. i. 



p. 784. 



hirsuta,per. hairy, nat. Egypt, ibid. 

 villosa, per. villous, nat. India, ibid. 

 pilosa, per. bristle-culmed, nat. E. Indies, ibid. 785. 

 Calorhachis, per. one-rowed, nat. Isl. Tanna, ibid. 

 complanata, per. five-flowered, nat. Indies, ibid. 

 dimidiata, per. half-compressed, nat. Africa, ibid. 786. 

 exaltata, per. flowery-spiked, nat. N. Holl., ibid. 



