AL0PECURU3. CLXI. GRAMINEiE. 601 



glumes, surrounded with hairs at base ; scales linear-lanceolate, 

 longer than caryopsis ; styles 3-parted ; stig. 3. 



P. ARKNARiA. Palis. (Aiundo. Linn. Ammophila Lindl.) Mai Gra^- 

 W. carping' cxieMsivcly; st. erect, ri^'ul/i— 11 h.^' » ; /r5. invu uie, U by i 

 smooth and glaucous. punf,'ently acute; .luaths smooth; '>}P-^^;^^ J^^;";^ 

 dense with tMcct, appivssed branches, 6—10' long, and an mch thick ; sjnktMs 

 compressed, crreciish-white ; lower palac longer than the tipper. % On sandy 

 sei Joasts, Can. to N. J. At Dorchester, Mass., this gra.ss is extensively manu- 

 factured into paper. Aug. 



lans. 



13. C A L A M A G R O S T 1 S . Ada 



Name compouniicd of Calamus wtxil AsroHtis. 



Panicle contracted; glumes 2, subcqual, acute or acuminate; 

 palea) 2, mostly shorter than the glumes, surrounded with hairs at 

 base, lower one mucronate, mostly awncd below the tip, the upper 

 one often with a stipitate pappus at base. 



1. C. Canadensis. Palis. (C. Mexicana. Nntt. C. ^g^^^^^.f If" ^i^; .^17"^''; 

 Mic^n■^ Reed Grass. Dluc-joint.—St. smooth, erect, rigid 3— 51 high J^i5. 

 linear4anceolate striate, with "smooth, veined sheaths; yamdc erect, rather 

 oose oblong the branches capillary, 'aggregated in 4s and 5s; ^/""^^ ^e^ 

 acute, slorhish, much longer \han the pa lea. ; lov:cr /'f ,- ^ifid at the apex 

 with kn exserted awn arising from below the mmdle ot the back. % Wet 

 grounds, N. Eng. W. to Mich. Makes good hay. Common. Aug. 



2 r roARGTATA Torr. CAgrostis glauca. MuM. Arundo stncta. Spr^ 

 Glaucous JrerectTAt high; hs. linear-lanceolate, scabrous with the 

 veins S keelwh te il^striaTe ;' stip. oblong, obtuse ; panicle condensed and 

 sp ke-form thelanches rigidlv erect, short and aggregated ; ^^^^^'wl^'^^^^^e 

 iaTceolate,iower 1-veinedf ttpper 3-veined ; ^^f V^"''"o. "^^.Tlree 1^^^^^^^ 

 apex, with a short, straight awn a little below the tip.— 7|. Bogs, h ree fctates ana 

 Brit. Am. July, Aug. 



•\ r wRFvipiiis Torr. CA. Epigeios. MwA/.) , 



% terete 3!^4f high ;Zr5^ broad-linear, the sheaths glabrous ; slip, hairy ; 

 • / ;,-.Irni:inrinnsp with the diffuse capiUarv branches solitary or in pairs; 



iwnless palea^ ; pappus very short, not half the length of the paleoe. li in 

 sandy swamps, N. J., Torrcy. 



ardsan.— Very rare and unimportant. 



%^2 'sfS'ere'^t'Timple; /f.,. 3-3" ^-ide, smooth ; p.,„A 4-8' long, 



Penn Yan, N. Y. Sartwell. Aug. 



Tribe 3 PHI^EOIDEJE.-Infloresence in dense, cylindric or unilateral 



^;Tkes.' Spikelets 1-flowered. Glumes 2, of nearly similar texture with the 



palese. 



14 ALOPECtTRUS. 



Glumes subequal connate, distinct ; palea^ --^''^l:''^^^^^^^ 

 glume, cleft on one side below the middle, generally awned , styles 



often connate. 



