138 I'ANU ACIvK 



almost acute, ii tniii. loim; lirst •iliiinc broad, ohtuso, li-iuTvcd, 

 about 1 mm. lou^; si'coud and tliinl t'(|iial, with cross nerves, 7- and 

 5-uerved respectively: fertile llorel oval or ovate, abruptly acute, 

 linely striate, "i mm. lou<,'. 



Florida, Ciir/iss ;}»)():', BIihIiiiII. .1. /'. (nir/tfi; all in iicrh. 

 CIray. 



C.l. P. iNDKUM li. Mant. -.': lS-1 (im). 



Culms slender, l)ran(•llini,^ erect or dilTiise. 40 (iO em. Iiiuh. 

 Sheiillis smooth; li.iiule 1 mm. loiii;'; blades and piiiucles ot'lcn 

 ])urplisli. smootli or scii.rid, the roriner Hat. I.")-'-iO cm. loni;'. ".* I 

 mm. wide. I'anicle strict, dense, s[)ikelike, o -ir» cm. loni:'. li-'* mm. 

 diani. : i.„». 1-.") nuu. lonu;. S[)ikclcls cuneate-ovate, smiooiIi, •* mm. 

 lon<;: lirst, ulume iJ-.Viiervcd, i.)) mm. loni4'; second and Moral 

 ^dume of lower lloret e(pial, 7-'.l-nerved : fertile liori't smooth, shin- 

 iny, oval, almost acute at both ends. 1. t mm. lon;^'. 



Mexico (Jidisco). /'ri/ir/lr 'i'MV.i. 



]Sear shallow pools, probably introduced from the Old World. 



(\'i. P. dichotomum li. Sp. IM. 1 : .^.S (i; ■»:;). 



IVrenniid; cidms smooth or softly h:ury. slciidi'r. simple or later 

 in the season briiiicliin<;- freely alony- the nuddle, '^O-AO cm. \\\<i]i, 

 rarely \-'t '.'(» cm. hi,<ih. licaf-blades near the base, tufted, lirm, 

 ovate-lanccohde, {).i)-'.\ em. loni;-. the (tthers Hat. lanceolate, usually 

 5-7 cm. loiii;', o-T mm. wide, holdiiijjf their width well to the I>ase, 

 some not over ;{ cm. loni;-, others I'i cm. lonn-; blades and sheidhs 

 usuidly eontainin,!; some soft hairs, somi'times suuioth, and on short, 

 ])lants sometimes roun'h. 'IMu' terminal panicle exserted. spreadiny', 

 compound, ovoid or pyramidal, :> -!) cm. lon,i,s the lateral ones 

 smaller, partially or wholly included. Spikelets few ( 10) to many 

 (■•i.-)!)). on slender |)e(licels. oblon.ii-ovate. obtuse, downy, less often 

 smooth, 1.5-'^ mm. lony; lii'st .irlume broad, l-nerve<l, minute to 

 one-third tiie lenufth of the spikelet; second empty {jflume and lloral 

 fiiuim^ of the neuter lloret e<|ual. usually 7-nerved, occasiomilly with 

 one or two or more nerves; palea small, hyaline, the fertile lloret 

 smooth, oval as \ou<x as the second and third ifbmu's. 



Most partf of iNorth .\merica. 



I'lants of various forms ami perhaps varieties or even species 



