68 HORTUS GRAMINEUS WOBURNENSIS. 



STIPA hymenoides,per. nat. America. S.memhranacea^ Pursh. 

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

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

 microiitha, 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. 

 stricta, per. upright, nat. Carolina, ibid. 

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

 LAPPAGO. Lappago. Generic character : ca/j/a, 3-valved ; ro- 

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

 loosely by the corolla. Tragus, R. S. Linn. Sys. Veg. i. 

 p. 378. 

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

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

 Veg. i. p. 378. 

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

 or rflc/[/s, jointed, roundish, excavated — in which the florets 

 are wholly or partly immersed ; cali/x 1 or 2-valved, lateral, 

 containing 1 or 2 flowers -^Jfowers 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. 

 Jiliformis, per. slender, n&t. S. ^uro^pe. July. Willd, 315. 

 monaudra, ami. 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. 

 l(Evis, per. smooth-calyced, nat. Tranquebar. 

 Thomcca. See Nardus Thomcca. 

 compressa, compressed-spiked, nat. Sierra Leone. 

 slolonifera, 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. 

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

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

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



