ORDER 155. GRAMINE^E. 



393 



jS. nitidtim. Smooth, shining; Ivs. narrow; ped. long; spkl. oval. 



y. *plieerocarpum. Hairy; peduncle long ; Bpkl. rounded, dark-purple. 



4. barbulatum. Taller; nodes with a ring of deflexed hairs. 



5. lantig-fnbKum. Woolly; Ivs. larger; spikelets green; pan. larger. 

 . upatliaceum. Hairy and leafy to the top ; panicles sessile. 



16 P. depanperatnm Mnhl. Culm simple, strict, tufted, 612'; IVP. linear 

 erect, the upper elongated ; pan. simple, sessile or becoming long-stalked ; spkl. 

 oval, }^ 1"; lower gl. J as long as the upper 7-veined one. Hills and woods, com- 

 mon. June. Varies with Ivs. hairy or smoothish, and 

 /3. fnt-o/u/um, with Iva. involute, ending in a long stiff point. 



1 7 P. panciflornm Ell. (c) Cnlm assnrgent, 1 2f; Ivs. lanceolate, 3 5' by 5 7" 

 hirsute below as well as the sheaths, faintly 9-veined; pan. open ; spkl. (d, e) few, 

 large (1 1J"), oval ; lower gl. \ as long as the upper, (a:, neutral fl.) Damp shades. 



18 P. pnbescens Lam. Culm slender, branched, 2 3f; Ivs. lance-linear, 3 6' by 

 35", 9-veined, retrorsely hirsute as well as the open sheaths ; spkl. oval, 1|", pnbes 

 cent, outer glume lanceolate, 1", inner 9-veined. Dry fields. June. 



19 P. latlfolium L. Erect, 1 2f; Ivs. lanceolate, dilated and cordate-clasping at 

 base, 3 5' by 1', smoothish, 11-13-veined ; pan. exserted, 3' long; spkl. obovate, 

 H" ; lower gl. ovate, J", upper gl. 9-veined ; neutral pales sub-equal, usually with 3 

 stamens. In moist shady places : common. June, July. 



20 P. xaiithopliysum Gr. Cnlm simple or branched below, 9 15'; Ivs. lance- 

 olate, 3 6' by 5 "i", not dilated at the ciliate clasping base; pan. long-stalked, 

 raceme-like ; spkl. few, round-obovate, H" ; lower gl. ovate, } as long as the upper 

 9-nerved one; sterile fl. often f. Dry. N. Eng. to Wis. June. 



21 P. 'visclduin Ell. Hoary with a dense vicid pubescence. 2 4f, stout; joints 

 with a smooth brown ring; Ivs. lance-linear, 3 6' by 6 16"; pan. 46', loose; spkl 

 pale, oval, 1" ; lower gl. and upper pale minute. Wet. N. J., and 8. Aug. 



22 P. elandestiiium L. Culm rigid, leafy, 2 3f; Ivs. 36' by 1', dilated and cor 

 date at base; sheaths scabrous or rough-hairy, enclosing the lateral and often the 

 terminal dense panicle ; spkl. elliptical, H". Moist woods. July, Aug. 



23 P. microcarpon Muhl. Erect, simple, glabrous; Ivs. lanceolate, broad and 

 clasping at base, veiny, 6 10" wide ; pan. long-stalked, diffuse ; spkl. small (J), oval 

 numerous, purple ; lower gl. minute. Pa., W., and S. July Sept. 



24 P. MILIACEUM. Millet. Lvs. lance-linear and sheaths hairy ; pan. large, open, nod 

 ding; spkl. ovate, solitary; glumes pointed, sub-equal. Turkey. 



21. FENICILLARIA BPICATA. Erect, 4f, branching, with broad, 

 flat leaves. Panicle cylindric-oblong. If in length, compact, consisting of innumerable 

 simple branches, each with 2 or 1 spikelets at the end, and clothed with spreading hairs 

 Each spikelet bears at length a white ripened grain. (%) E. India. 



22. OPLISMENUS, Beauv. COCK-SPUR G. 

 Spikelets in dense, spike-like, panicled racemes. 

 Glumes and lower pale of the sterile fl. rou^h- 

 poiuted or awned. Otherwise as in Panicum. 



1 O. crus-galll L. (a) Culm terete, 3 4f ; Ivs. lance- 

 linear, rough-edged, ligule none: pan. with its spike- 

 form branches alternate or in pairs; rachis rough-hairy ; 

 glumes bristly, scarcely awned; awn of the pale (6) 

 618" long, very rough. Sheaths generally smooth. 

 Waste ground* : com. Aug., Sept. [ mere i y pointed. 

 0. miiiicug, (c) Awns very short, or the hispid pale 

 f. Mtpidux Sheaths very bristly ; awni- very Innsr. A very ooarse variety. 



