398 



ORDER 155 GRAMLNE^E. 



34. TRIOUSPIS., Beauv. Spkl. terete, or tumid, 3-9-flwd. 

 Glumes unequal, awnless. Lower pale (n, c) conspicuously fringe- 

 bearded on the 3 strong veins, tipped with 2 or 3 



teeth, and 1 or 3 short awns or cusps ; upper pale 

 much shorter, 2-toothed -(ft). Fls. paniculate. 

 Sheaths hairy at throat. Aug., Sept 



WINDSORIA. Culm erect, simple. Lower pale 



3-cusped Nos, 1, 2 



URALEPIS. Culm spreading, branched. Lower 



pale 1-cusped. Nos. 3, 4 



1 T. seslertoides (Mx). False Red-top. (*, a, n, m) Culm 



3 of ; Ivs. linear, involute when dry ; pan. open, loose, 

 8 12', the slender branches at length spreading ; spkl. 

 (a) oblong, 3", 5- or 6-fl\vd., purple, shining. n Beautiful. 

 /3. Hejcvoxa, Branches of the panicle flexuous ; spkl. 3-5-flwd., 2". Pa. 



2 X. ambigiia (Ell.) Culm 2 3f, wiry; Ivs. narrow and rolled; pan. small (3 5'), 



few-flwd. ; spkl. ovate, the 5 7 fls. divaricate, it Pine-barreus, S. 



3 T. purpurea (Walt.) (b) Culm bearded at the nodes, 1018'; Ivs. subulate, short; 



panicles more or less sheathed ; spkl. (b) 3-flwd., awn scarcely exceeding the eroded 

 segments of its pale. (T) Coast sands, Mass, to Fla. (c, lower pale.) 



4 T. cornuta (Ell.) Cu'm 2f ; Ivs. and sheaths hairy; awn of the lower pale plu 



mous, much longer than the lateral teeth, recurved. Dry sands, S. 



35. ARUNDO DONAX. A gigantic ornamental grass from Italy, 

 where it is cult, for vine-poles, fence-wood, fishing-rods, etc. Culm 10 15f high ; lv. 

 broad, fiat, smooth, and shining; pan. diffusely branched ; gl. as long as the 3 fls. ; rachis 

 beset with long hairs ; lower pale with a short awn in the cleft at apex. 2f 



/3. vERsfcoLOR. Gardener's Garters. Leaves striped with white. 



36. GRAPHEPHORUM, Desv. Spkl. of 25 remote fls. with sub 

 equal glumes. Fls. bearded at base. Gls. and pales thin, lanceolate, awn- 

 less, convex, not keeled. l Erect, glabrous. Lvs. flat. Panicle simple 



G. melicoldcs Beauv. Culm slender, 1 2f, with 2 or 3 short erect linear Ivs. ; pan. 

 loose, 3-4' long; spkl. 2-3-flwd., 3--1" long. Upper Mich. (C. E. and A. H. Smith). 

 j3. ? triflorum (Aira trif. Ell.) "Fls. somewhat woolly at base, not villous." Ga. 



37. GYNERIUM ARGENTEUM. PAMPAS GRASS. A magnificent reul 

 from S. Am., becoming common. @ Leaves in a dense, radical cluster, recurved, nar- 

 row, channeled. Culms 10 18f, clustered, bearing dense, hairy panicles, which are 

 1^ 2f, silvery white, with innumerable flowers and their long, silky 



hairs. Some of the panicles are fruitful ( $ ), others barren ( $ ). 



38. DACTYLIS, L. ORCHARD G. Spkl. 3-5-flwd. 

 compressed. Glumes unequal, shorter than the fls 

 Pales subequal, lance-acuminate, the lower (and glumes) 

 carinate, awn-pointed. Lvs. channeled. Panicle com- 

 posed Of dense 1 -sided clusters. June. 



J. glomerata L. Culm 2 4f high ; Ivs. broad, glaucous ; stipules 

 lacerate ; spkl. loose-flwd. ; gl. very unequal. U Shady fields. A 

 good grass for hay or pasturage. 



39. KOEJLERIA, Pers. Spkl. 2-7-flwd., compressed; gl. subequal 

 acute, scarcely shorter than the fls.; upper fl. pedicellate; lower pale 





