Class III. Order III. 27 



25. TRICHOD1UM. 



TKICHODIUM LAXIFLORUM. .M/c/i. Thin grass. 



Culms erect ; leaves narrow, short ; sheaths some- 

 what rough. Pers. 



This grass is readily known by its very thin, spreading, ca- 

 pillary panicle. Stem erect, smooth, slender. Leaves short, 

 glabrous, on roughish sheaths. Panicle consisting of very long, 

 straight, rough branches, of a purplish colour, hardly larger 

 than hairs, and very flexible. These are given off in half 

 whorls, and are repeatedly subdivided into three or four branch- 

 lets at a time. Flowers minute, scattered at the ends of the 

 branches. Glumes lanceolate, acute. Road sides. -July. Pe- 

 rennial. 



26. MUHLENBERGIA. 



Subgenus BRACK YELYTRUM. Upper valve of the corolla 

 ivith a clavate rudiment at base. 



MUHLENBERGIA ERECTA. Schreb. Erect Muhlenbergia* 



Culm erect, simple ; leaves pubescent; panicle lax; 

 calyx with a long awn. 



Syn. BRACHTELTTRUM ARISTATUM. Beauv. 



DlLEPTRUM AR1STOSUM. MX. 



A simple slender grass, two or three feet high. Flowers few, 

 remote, long-awned. On the sides of Wachuset hill. June. 



D1GYN1A. 



27. ANTHOXANTHUM. 



ANTHOXANTHUM ODORATUM. L. Sweet scented Vernal grass. 

 Spike ovate-oblong ; flowers longer than their 

 awns, standing on short stalks. 



Stem about a foot high. Leaves short, flat ; sheaths some- 

 what swelling; stipule lanceolate, scarious. Spike terminal, 

 solitary ; calyx glumes unequal, rough on the back ; corolla 

 shorter than the calyx, awned on the back. 



This grass, when partly faded, is exceedingly fragrant, whence 

 its name. It grows on farms where it was formerly introduced 

 from Europe. May, June. Perennial. 



