GRAMINEAE. 



8. Agrostis altissima (Walt.) Tuckerm. Tall Bent-grass. (Fig. 369.) 



Cornucopiae altissima Walt. Fl. Car. 74. 1788. 

 Agrostis altissima Tuckerm. Am. Journ. Sci. 45: 44. 



1843- 

 Agrostis data Trin. Mem. Acad. St. Petersb. (VI.) 



Part 2, 364. 1845. 



Culms 2-4 tall, erect, simple, smooth, usually 

 stiff. Sheaths overlapping, scabrous, the upper 

 one elongated; ligule i // -2 // long; leaves elongated, 

 6'-! in length, \"-\y 2 " wide, scabrous; panicle 

 7'-9' long, the branches ascending or erect, some- 

 what scabrous, the lower z'-tf in length, spikelet- 

 bearing at the extremities; spikelets \W-\y 2 " 

 long, the outer scales acute, scabrous on the keel; 

 third scale shorter, obtuse, scabrous, occasionally 

 bearing a short awn; palet small or wanting. 



In sandy swamps, New Jersey to Florida and Ala- 

 bama. Panicle usually purplish. Aug.-Oct. 



9. Agrostis intermedia Scribn. Upland Bent-grass. (Fig. 370.) 



Agrostis intermedia Scribn. Bull. Tenn. Agric, Exp. Sta. 

 7: 76. 1894. 



Culms i-3 tall, erect, simple, smooth and glabrous. 

 Sheaths smooth, those at the base of the culm often 

 crowded and overlapping; ligule i // -2 // long; leaves 

 4 / ~9 / long, i // -3 // wide, scabrous; panicle 4/-Q/ in 

 length, the branches iX / ~3 / l n J?> ascending, dividing 

 at or below the middle, the divisions divergent, the 

 pedicels appressed; spikelets about \" long, the outer 

 scales acute or acuminate, scabrous on the keel; third 

 scale about three-fourths the length of the first, smooth; 

 palet small or wanting. 



In dry soil, New York to Tennessee and Missouri. In- 

 termediate in aspect between A. altissima and A. peren- 

 nans. Aug.-Oct. 



10. Agrostis Novae-Angliae Tuckerm. 

 New England Bent-grass. (Fig. 371.) 



Agrostis Novae-Angliae Tuckerm. Hovey's Mag. 9: 



'143. April, 1843. 



Agrostis altissima var. laxa Tuckerm. Am. Journ. Sci. 

 45: 44. October, 1843. 



Culms S'-is' tall, erect, simple, smooth and gla- 

 brous.. Sheaths longer than the internodes, gener- 

 ally overlapping; ligule i // long; leaves \'-^Yz f 

 long, \" wide or less, erect, usually involute, scab- 

 rous; panicle 3 ^'-7' in length, open, the branches 

 spreading or ascending, dividing at or below the 

 middle, the divisions divergent, the pedicels often 

 appressed; spikelets i%"-iW long, the outer 

 scales acute, strongly scabrous on the keel; third 

 scale somewhat shorter, obtuse. 



Newfoundland, south to the high mountains of New 

 Kngland, New York and North Carolina. 



