PANKK.K. I (10 



lliv siiiiiiiiil ; 1*1' Ivd tij'fi'rlihjJiirt'lijihlioHs tthuiw. Sii'iii slirubby, 

 \:ii'ial)U'. 



(hif spi'cics 74. 



1. P. filiforme L. S|». Tl. :.: (It"):;), /'(tsjia/fim fi/i/onnc 

 Fliic^'ii'i'. (Inim. Mdiid::'. l.')'.i (ISIO). Dit/iftin'ti fi/i/oniiis Mulil. 

 (Iriiiii. i:il (ISIT). Sipithn-isiiKf rillusa W;ilt. V\. Car. TT (ITSS). 

 tf>l(' Kuiitli. 



Ctilnis very sleiitU'r. tipriirlit. niiu'li hraiicluMl liolow. 30-70 em. 

 lii;,'Ii. Lower sheaths liairv : hhuU's siiiootli, \-'l'i em. lonj;, '.\ mm. 

 wi(U'. Spikes •.'-s. erect, apprnxiiiiate. 4-14 tin. hjiijjr, the raeliis 

 liUrorm. triaiiiruhir, tlexuese. Spikelets in pairs or threes; in tlie 

 former ease tlie pedieel of one :■; al)out its own U'njifth. of the other 

 more than twice as loiijr: tirst <:lnme minnte or ohsoh-te. second and 

 third thin, clothed with minnte hairs with enlarired tips, the former 

 half or two-thirds as loni: as the spikelet. ;}-nerved, tlie longer 7- 

 nerved, fonrth and palea siiorter. dark brown. 



New Jersey, Svribtivr W'^W, lival fur M. A. C. ; CJeorgia, 

 ('(Hih'i/ : Mexico, Pahiier 454, ")(i'-2. 



Florida. 'I'exas, and Mexico. 



2. P. Simpsoni (Vasey). /'. stuKjuiuale L. var. Simpsoni 

 Vasey, Contrib. V. S. Nat. Herb, ^riry (1S!C.>). 



Tulms branching and rooting at the lower nodes, more or less 

 compressed, (»0-l".'0 eni. iiigh. Sheaths about tlie length of the 

 internodes, softly imliescent with hairs from glandular bases; ligule 

 ciliate. about 1 mm. long ; blades flat, slightly pubescent. 10-15 

 cm. long. 4 -('> mm. wide. Spikes S-IO. digitate or approximate, 

 spreading. T^-lo cm. long, the raehis slightly flexuosc. Hattened, 

 0.:?-0.4 mm. wide. Spikelets in pairs, one subsessile, the other 

 raised on a pedicel half or two-thirds its length : empty glumes '2, 

 suberpial. a little longer than the floret, smooth, linear, -t.'i mm. 

 long, almost obtuse, when spread. T-nerved ; floral glume obscurely 

 3-nerved. Anthers linear. H mm. long. 



Florida (Manatee). J. If. Sintjison in 1800 for U. S. Dept. 

 Agricul. 



n. P. setigerum Beauv. Fl. Owar. I, /. 40 (1804). Echhwchloa 

 jetigcni lieauv. Agrost. n'.) (181"2). 



