s* III. Order III. 45 



Subgenus TORRE si A. Calyx three flowered, two barren 

 florets awned on the back. 



HOLCUS ALPINUS. WahL Mpine Soft grass. 



Panicle small ; calyx oblong ; florets hairy with a 

 geniculate awn on the back. 



Syn. HlEROCHLOA ALP IN A. R. 4' & 



This grass I found in 1816, and, not having seen Wahlenberg's 

 Flora Lapponica, named it H. monticola. Its habit resembles 

 that of H. odoratus, but it is shorter, smaller, and more fragrant. 

 Calyx smooth, purplish, acute, longer than the florets. Florets 

 three, two outer ones obtuse, crested, slightly ciliate within, 

 awned on the back. Central floret perfect. On the White 

 mountains of New-Hampshire. July. 



47. LOLIUM. 



LOLIUM PERENNE. L. Ray grass. Darnel. 



Spike awnless ; spikelets compressed, longer than 

 the calyx. Sm. 



Stem a foot or more in height, round, smooth. Leaves smooth, 

 with short stipules clasping the stem. The stem terminates in 

 a long, smooth, flexuous rachis or receptacle, to the two sides of 

 which the spikelets are fixed, alternately, and at some distance 

 from each other. Calyx sessile, of one valve, containing a flat 

 ovate, acute, sharp edged spikelet of close lanceolate florets. 

 May, June. Perennial. Introduced, rare. 



48. TRITICUM. 



TRITICUM REPENS. L. Couch grass. 



Calyx subulate, many nerved, five flowered ; flo- 

 rets sharp pointed ; leaves flat ; root creeping. Sm. 



Syn. AGROPTRON REPENS. Beauv. 



This grass has a long, creeping root, penetrating deeply into 

 the earth, and very tenacious of life, which renders it a trouble- 

 some weed in cultivated grounds. Stem about two feet high. 

 Leaves spreading, flat, rough on the edge and upper surface, 

 ending in a flexuous receptacle, bearing two rows of alter- 



