76 Bulletin VII. 1. 



2. Agrostis intermedia Scribn. 



A slender perennial grass, two feet high, culms erect or genicu- 

 late at the lower joints. Sheaths smooth; ligule one to three lines 

 long; leaf-blade one to one and one-half lines wide, four to six inches 

 long, scabrous. Panicle oblong-pyramidal, six to eight inches 

 long, with weak and slender branches (as compared with A. elata)\ 

 primary branches in clusters of two to seven at a node, branching 

 again below the middle. Spikelets about one line long, scattered 

 above the middle of the branches. Empty glumes thin, subequal, 

 lanceolate, acuminate, scabrous on the keels, otherwise smooth. 

 Flowering glume about three-fourths the length of the empty ones. 

 Common in damp places, in thickets and along the borders of 

 woods. August to October. 



This approaches A. elata, but is more slender with thinner and 

 more numerous leaves. Agrostis perennans cestivalis Vasey, [Agrostis 

 perennans of this work) is certainly Trichodium decumbens Michx.; it 

 has weak and for the most part decumbent stems and oval or 

 oblong panicles. Michaux cites CornucopicE pereniiajis as a synonym 

 under Trichodium decumbens. 



3. Agrostis perennans Tuckerman. 



Plate XXV. Figure 97. 



A perennial with weak, slender, and mostly decumbent leafy 

 culms, about two feet high. Internodes short. Sheaths smooth, 

 striate, shorter than the internodes; ligule about one line long; 

 leaf-blade flat, thin, widely-spreading, about one line wide, four 

 inches long, acute, scabrous. Panicle oblong, about six inches in 

 length; primary branches in clusters of two to five at a node, 

 branched at or below the middle; the branches and pedicels all 

 widel)^ divergent. Spikelets pale green, a line or less long. Empty 

 glumes rather unequal, lanceolate, very acute, rather minutely 

 scabrous on keels. Flowering elume a little shorter than empty 

 ones. Common in moist, shaded places, borders of woods, etc. 

 August to October. 



4. Agrostis Novae-Anglise Tuckerman. 



Plate XXV. Figure 98. 



A rather stout, coarse perennial, with culm erect or geniculate 

 at the base. Sheaths striate, mostly exceeding the nodes; ligule 

 one to two lines long; leaf-blade flat, rough on upper or on both 

 surfaces, one and one-half to four lines wide, four to ten inches 

 long. Panicle oblong diffuse, six to twelve inches long, the upper 

 portion often expanding while the lower is yet included in the 

 upper leaf-sheath; primary branches numerous at each node, 

 three to seven inches long, ascending or finally spreading. Spike- 

 lets numerous, about one line long. Lower empty glume lanceo- 

 late, rather slender-pointed, scabrous on the keel above and serru- 

 late on the upper margins; second glume more blunt, otherwise 

 similar, three-fourths of a line long. Flowering glume equalling 

 the lower empty ones, ovate, obtuse. Palea wanting. Along 

 mountain streams; Roane mountain. July — August. 



