1 T. seslerioides Torr. False Red-top. Culm hard and firm, glabrous, 4 to 5f high; lvs. glabrous, linear, involute when dry, sheaths hairy at the throat; pan. open, loose, 8 to 12' long, the slender branches at length spreading; spikl. te-retish, lanceolate, about 5-flowered, purple, 2 to 3" long; cusps of the lower pale very short. - A splendid grass, in dry fields, N. Eng. to Ill. and S. States. Aug., Sept. (Poa Mx. Windsoria poseformis Nutt. Uralepis cuprea Kunth.) - A variety has smaller, 3 to 5-flowered, pale purple spikelets and flexuous branches. Another var. has the spikelets white.
2 T. ambigua Kunth. Culm strictly erect, 2 to 4f high, slender and firm, glabrous as well as the linear, convolute-filiform lvs., and the sheaths which are scarce half the length of the internodes; pan. contracted, small, 3 to 5' long; spikelets few, subsessile, ovate turgid, 5 to 7-flowered, the fls, at length divaricate, more or less purple. - Car. to Ga. and La. Spkl. not longer, but much thicker than in No. 1. Sept. (Poa, Ell.)
3 T. stricta. Glabrous; culm slender, firm, erect, 3 to 6f high; pan. very strict, spike-like, dense; spkl. sessile, flat, nearly as broad as long, 7 to 9-flowered; glumes lance-linear, much longer than the pales, about as long as the spikelets. - Miss. and La. Lvs. very long, flat. Pan. about 6' long, 6" wide. A singular grass. (Windsoria Nutt.)
32. URAL'EPIS, Nutt. Sand Grass. (Gr. tail, a scale; a characteristic name.) Spikelets 2 to 5-flowered, fls. distant; glumes 2, shorter than the flowers, unequal, awnless; pales 2, very unequal, both conspicuously fringe-bearded along the 2 or 3 veins, the lower 2-cleft, with the midvein produced into a short, straight awn between the 2 segments; upper 2-keeled. - Culms decumbent, branched. Pan. small, the branches racemed.
1 U. purpurea Nutt Caespitous; culms procumbent at base, bearded at the nodes, 10 - 18'; lvs. subulate, the upper ones shorter than the sheaths, hairy beneath; pan. simple, racemous, terminal and lateral, concealed in the sheaths of the leaver the upper one partly exsert; spikelet 3-flowered; awn of the pale about as long as the lateral, obtuse segments. - Sea coast, among the drifting sands, Mass. to Ga. Taste of the plant bitter. Aug. (U. aristulata Nutt.) 2 U. cornuta Ell. Culm 2f high, and with the narrow (1") leaves and sheaths hairy; pan. slender, composed of a few small, few-flowered branches; glumes 2, subequal, very acute, purple as well as the 2 pales; upper pale longer than the glume, the midvein prolonged in an elongated, at length recurved awn beyond the segments. - S. States. (Triplasis Americana Beauv.)
33. DAC'TYLIS, L. Orchard Grass. (Gr. a finger; from the form of the spikes.) Spikelets aggregated, compressed, 3 - 5-flowcred; glumes unequal, herbaceous, the larger one carinate, shorter than the flowers; paleae subequal, lanceolate, acuminate, the lower one emarginate, carinate, mucronate, upper bifid at apex; scales dentate. - Lvs. carinate. Pan. composed of dense clusters.
D. glomerata L. Culm roundish, 2 - 4f; lvs. linear-lanceolate, carinate, a little scabrous, glaucous; sheaths striate; stip. lacerate; pan. remotely branched, rather secund; spikelets about 4-flowered, in dense, glomerate, unilateral, terminal clusters; glumes very unequal; anth. large, yellow. - A fine, well-know a grass, of rapid growth, introduced in shady fields, as orchards. etc. June. § Eur.
34. KŒLE'RI A, Pers. (In honor of M. Kœler, a German botanist.) Spikelets compressed, 2 to 7-flowered; glumes 2, subequal, acute or acuminate, shorter than the flowers; upper flower pedicellate; pales 2, the lower often acuminate-mucronate. - - Grasses caespitous. erect, simple, with dense panicles.
K. cristata Smith. Culm 20 - 30' high, smooth, leafy to one-half its height, rigidly erect; lvs. flat, erect, pubescent, 2 - 3" by 1 - 2", shorter than their pubescent sheaths; stip. short, lacerate; panicle spicate, narrow, 3 - 5' long, 6 - 8 diam., branches very short; spikelets 2" long, silvery and shining, compressed, about 2-flowered, with an abortive pedicel; glume linear-oblong, acute, serrulate on the keel upper one longer. - Mid., W. States and Can. - A variety (K. nitida Nutt.), is smaller and more delicate.
35. DIARRHE'NA, Raf. (Gr. two, rough; from the two scabrous keels of the upper paleae.) Panicle racemous or simple; glumes 2, very unequal, 2 - 5-flowered, rigid, acuminate, mucronate; paleae cartilaginous, lower cuspidate, upper much smaller, emarginate; earyopsis coated, as long as the upper pale; scales ovate, ciliate.
D. diandra. Culm erect, nearly leafless, slender, rigid, 15 - 30'; lvs. few, sub-radical, broadly linear, flat, rough-edged, 10 - 16' by 5 - 7", nearly glabrous; sheaths close; stip. obsolete; panicle very simple and slender, branches erect, few. spikelets 2-flowered; glumes broad-ovate, upper twice larger, 5-veined; pales much longer than the glumes, the upper with 2 roughish, green keels, and con-spicuously mucronate; sta. 2 ? - River banks, Ohio to Ill. (D. Americana Beauv. Festuca Mx.)
36. FESTU'CA, L. Fescue Grass. (The ancient Latin name.) Spikelets 3 to ∞-flowered; glumes 2, unequal, mostly curinate; pales firm, naked, the lower rounded (not carinate) on the back, obscurely veined, acute, or mucronate, or awned; stamens 3, rarely 1 or 2; stigmas plumous; earyopsis linear-oblong, mostly adherent to the upper pale. - Spikelets in racemes or panicles, the fls. remote, not webbed at base.