50 TR1ANDRIA.— DIGYNIA. 



leaves broad, pale green; panic, concealed at (he 

 base. 



3. T. elatum: culm erect, firm ; leaves narrow-linear, 



flat, scabrous ; sheaths smooth ; panicle verticillate 

 a little spreading ; glumes nearly equal. 

 HAB. Sanrly swamps. Aug. % . Cespitose,3ft.high, 

 firm; panic, purp. ; cor. shorter than the calyx. 



4. T. montanum: culm cespitose, erect ; leaves invo- 



lute, filiform, and as well as the sheaths, scabrous ; 

 panicle capillary, loose, a little spreading ; glume? 

 equal. 

 HAB. Mountains. July. %. 8—12 in. high, filiform . 

 panic, elongated, semiverticill., flex, hispid; glum, 

 nerveless ; cor. longer than the calyx. 



53. AGROST1S. Bent-grass. 



1. A. stricta : panicle elongated, straight ; calyx equal : 

 corolla smaller than the calyx ; valves unequal, with 

 an awn at the base of the inferior valve, longer thai. 

 the flower. 

 HAB. Fields. June. Culm erect, with black nodes; 

 awn twice as long as the flower. 



'2. A. vulgaris ; branches of the panicle smooth ish, at 

 length divaricate ; inferior valve of the corolla 3- 

 nerved ; stipule very short and truncate. 

 HAB. Meadows and pastures. June — Aug. U . Root 

 creeping; culm 12 — 18 in. high; pan. capill. ; fl. 

 purp. 



3. A. alba: branches of the panicle hispid, spreading, 



loose ; inferior valve of the corolla 5-nerved ; sti- 

 pule oblong. 

 HAB. Fields and pastures. June — Aug. If.. Root 

 creeping ; culm assurgent, often sobolif ; panic, ca- 

 pillary. 



4. A. lateriflora : culm erect, branched above, sobo- 



liferous at the base ; panicles lateral and terminal, 

 contracted, dense ; calyx acuminate ; corolla short- 

 er than the calyx, equal, pubescent at the base, 

 awnless. 

 HAB. Swamps and wet meadows. Aug. — Sept. U . 

 Root creeping ; culm 2 ft. high, with swelling nvdcs 

 panicles spike form. 



