Glyclria. CLXI. GRAMlNEiE. Cl3 



an abortive pedicel ; erluvie linear-oblong, acute, serrulate on the keel, upper one 

 longt-r.— 7|„ Oliio, W. S. SullivntU! 

 fi. Nutlalii. St. 8' higii.— Mich. 



2. K. oBTi SATA. Turr. (Aira obtusata, Mickc. ?) 



St. ereci, geniculate below, leafy, IH — 21' high; mxks pubescent, blackish, 

 contracted ; /c.s. 3 — (j' by 2", scabrous, acuminate, shcjricr than the sheaths ; stip. 

 lacerate ; panicle coniracled, 3 — 5' long, 6 — 12" diam., dense, brantkcs fascicled, 

 short, appressed; $inkdcts li" long, 2-tlo\vered, tuniiil ; lower glume linear-ob- 

 long, upper larger, obovate, obtuse, puberulent ; palccc equal, awnless, obtuse, 

 scarious at summit, a little exserled. — % Ohio, Sullivunt ! 



3. K. TuiNCATA. Torr. (Aira truncata. Muhl. Holcus striatus. Linn.) 

 St. slender, 21' high; /r.s-. smooth, narrow, 4 — 6' long; paiiirfc oblong, 



loose, racemose ; spiketd.'; 2-Hi)wered, in clustered racemes, on short, suberect 

 branches; glumes subequal, the lower one linear, upper one much broader, very 

 obtuse or truncate ; pale(B awnless. — Tj. Fields and open woods. Can. to Ky. Jn. 

 /?. major. Lvs. broad-linear, very long; panicle large, spreading. 



4. K. Pfnnsylvanica. DC. (Aira mollis. Muhl.) 



St. smooth, 2 — 31' high ; nofles black ; lis. 1 — 2' long, narrow, flat, lower 

 ones soft pubescent; panicle very slender, loose, 4 — 8' long; spikelets about 3- 

 flowered, shining; lower gluvie linear, v]ypcr one much broader, oblanceolate, 3- 

 veined ; palecc awnless. — ij. Rocky woods, N. England (rare) to Ky. ! 111. 

 May, June. 



5. K. paniculata. Nult. 



St. tall (2 — 3r high) ; /r<;. elongated (4 — G'), on long sheaths ; panicle ob- 

 long, glabrous ; spikclets 2 — 3-flowered, shining ; glumes, awnless, very unequal, 

 the larger one truncately obtuse. — % Michigan. "Also Florida. 



39. TRICtJSPIS. Palis. 



Lat. tres, three, cuspis, a point ; alluding to the structure of the llowcrs. 



Spikelets terete, tumid, about 5-flowered ; glumes 2, unequal, cari- 

 nate, shorter than the flowers ; lower palea bifid-toothed, tricuspidate 

 by the projecting keel and two lateral veins, upper one truncate, al- 

 most emarginate ; caryopsis 2-horned. 



T. SESLERioiDEs. Torr. (Poa. Michx. Winsoria poccformis. Nutt.) 

 False Red-top. — Si. very hard and smooth, erect, 4 — 5f high ; lis. smooth 

 beneath, lance-linear, veined, 12 — 18' long; loircr shea/ /is often hairy; stip.O; 

 panicle loose, expanding, branches flexuous, smooth, long; spikclets ovate- 

 lanceolate, purple, shining, 4 — 5-flowered; glumes unequal, mucronate; Imccr 

 palea with 3 projecting veins. — 9| A splendid grass in sandy fields, N, Eng. to 

 111. and S. States. 



40. GLYCERIA. Brown. 



Gr. yXt)*cuf, sweet; on account of the sweet taste of the seeds. 



Spikelets slender, many-flowered; glumes 2, unequal, vcinless, 

 truncate, shorter than the flowers ; lower palea herbaceous, embrac- 

 ing the upper, bidentate one ; scales connate, truncate. 



1. G. FLUiTANs. Brown. (Festuca fluitans. Linn.) 



St. compressed or ancipitous, ascending at base, 3 — 5f high ; lvs. lance- 

 linear, smooth beneath, about a foot long ; shca'hs veined, smooth, with a very 

 large stipule; panicle secund, lonjr, slender, slightly branched; spikelets 1 — 1\' 

 long, linear, appressed, about lO-flowered; Jls. obtuse; lower palea 7- veined, den- 

 ticulate. — 1\. Aquatic. N. and N. W. States. June, July. 



2. G. ACUTiFLORA. Torr. (Festuca brevifolia. Muhl.) 



St. somewhat compressed, 1 — 2f high; lvs. narrow, attenuated above, half 

 as long as the stem ; panicle simple, long, appressed ; spikclets linear, '1 — 6-flow- 

 ered ; ks. very slender, acute, indistinctlv veined. — 'ZL Inundated meadows, N. 

 Eng., N. Y. June. 



