Oedbb 166,— GKAMINELE. • 777 



terropteo, 2 — 3' long, many-flowered; glumes linear, I the length of their awns; 

 lower paleae mucroHate. — y Bog meadows, also on rocky mountains, N. Eng. to 

 Mo. Aug., Sept. (Polypogon racemosus Nutt.) 



2 M. Me^dcana Trin. Oulm erect or ascending, mih swelling nodes, muoh 

 branched and leafy above, often nearly leafless below, 1^^ — 3f high ; Ivs. lanceolate, 

 scabrous, with half-clasping sheaths; panicles numerous, terminal and lateral, 

 spike-dustesred, dense-flowered and purple-spotted, lateral ones partly endosed in 

 the sheath ; glumes narrow acuminate, mostly shorter than the subequal, pubes- 

 cent pales. — U Wet shades, N". Eng. to Wise, common. Aug. (Agrostis L.) 



3 M. sobolifera Gray. Culm erect, slender, producing shoots at base, branched, 

 18 — 30' high; branches erect and filiform; nodes not swelling ; Ivs. linear-lanceo- 

 late, with open sheaths ; panicle simple, filiform, with appressed branches, and 

 rather crowded spikelets; paleee equal, longer than the acute glumes. — if Kocky 

 hills, N. Eng. to 111. and S. States, frequent. Aug. (Agrostis Muhl.) 



4 M. aylvdtioa Torr. & Gr. Culm ascending, 2 — 3f long, much branched, diffuse, 

 smooth, with swelling nodes ; Ivs. lanceolate, scabrous, veined, 4 — 6' long, with 

 smooth, open sheaths ; panicles slender, rather dense ; glumes nearly equal, acn- 

 minate, a Utile shorter than the palece; awns several times longer than the spike- 

 let.— y Rocky shades, K Y. to 111., N. J., Penn. Sept. (Agrostis Torr.) 



5 M. Willdeno'Wii Trin. Culm erect, subsimple, pubescent at the nodes, with 

 a few appressed branches; Ivs. 6 — 9' by 2 — 3'', lanceolate, veined, scabrous, 

 spreading, with pubescent sheaths ; panicle contracted, very slender and long, 

 with remote, filiform branches ; glumes subequal, acuminate, Jialf as long as the 

 palecs; awn 3 — i times the length of the spikelet. — U Rocky woods. Can. and 

 U. S. July, August. (Agr. tenuiflora Willi) 



6 M. diSvtsa Schreb. Culm decumient, diffuse, brcmcMng, slender, compressed ; 

 branches assurgent ; Ivs. 2 — 3' by 2", linear-lanceolate, rough, with smooth, 

 striate, open sheaths; panicles terminal and lateral, with remote, appressed, 

 rough branches; spikelets 2" hn^, pedicellate, often purple; awn about as long 

 as the pales; glumes extremely minute. — if Borders of woods and shady fields, 

 N. Eng. to Car. and Ky. Aug. 



7 M, arist^ta Pers. Culm erect, simple, retrorsely pubescent at the nodes, 2 — 3f 

 high ; Ivs. lanceolate, scabrous, ciliate on the margin, 4 — 6' long, 3'' or more 

 wide, with somewhat open sheaths; panicle terminal, simple, racemous, con- 

 tracted; spikdeis 6" (16" irwlvMng the awn) long, pedicellate; glumes minute, the 

 lower obsolete ; lower paleae half as long as its awn, upper paleas with a short 

 awn (abortive pedicel) at base lodged in the dorsal groove. — U Rocky hills. Can. 

 and U. S., frequent July. (Brachyelytram Eeauv. M. erecta Roth.) 



8 M. oapill^ria Kunth. Ofespitous ; culms erect, very slender and smooth, IS — 

 24' high; Ivs erect, becoming filiform towards the end. 1 — IJf long; panicle 

 diffuse, with the branches 1 — i' long, in pairs, and as fine as hairs ; spikelets 

 purple; lower paleae produced into an awn 3 or 4 times its length. — V Sandy 

 soils, K Eng. to Ga. and Ky. An exceedingly delicate grass, with large, purple, 

 glossy and almost gossamer-like panicles, waving in the breeze. Jn., Jl. (Tri- 

 ohochloa DC.) 



8. POLYPO^GON, Desf. Polypog Grass. (Gr. rroXvg, many, Truyuiv, 

 beard.) Spikelets l-flowered, densely panicled ; gls. 2, subequal, thin, 

 carinate, both similarly awned, much longer than the flower; pales. 

 thin, the lower usually awned near the tip, upper bicarinate ; grain free, 

 oval, smooth. — Leaves flat. Panicle spike-like. 



P. Monspeliensis Desf Culm simple, decumbent below. If or more high ; Ivs. 

 lance-linear, much shorter (2 to 5' by 2 to 3"), acute-pointed, minutely downy ; 

 panicle much-branched, spicate-lobed, 2 to 3', the branches very short and dense- 

 flowered, pale ; gls. hispidulous, 1" long, the awns a little longer. — Fields, coast- 

 ward, N. Eng. 7 common South. § Bur. 



9. CALAMAGROS'TIS, Adans. (Name compounded of Calamus and 

 Agrostis.) Spikelets l-flowered ; glumes 2, subequal, acute or acumi- 



