122 PAXU'ACK.E. 



'•Also found in Jiimiiica, Tririidiid. ('iil»ii, Hnizil. Africa. East 

 Inilii's." (irit'sl). 



UK P. Urvilleanum Kuntli. Uv\. (iniin. 1::;') (l8-.»!>). 



A stout briiucliiii^' perennial, 4(>-T() cm. liixli. fi'oni a rootstock: 

 ewlins and slieatlis clothed with soft, whitish, ret rorse hairs. Jjcat- 

 blades 30-50 cm. lon<r. 1 cm. wide, ri.yid, often convolute with 

 setaceous [loints. I'anicle dilVuse, l5-o<> cm. lon<;, rays often 

 naked for the lower tiiird. Spikclcts hairy, ovate, acute, T-S mm. 

 lon<;; first and second <rlumes nearly e(iual, ovate, acute, the former 

 7-'.i-iierved, the latter ir)-lT-nervetl ; lloral jrlunu' of tlu' stamiiiute 

 floret ovate, about (5 mm. Iniijf, 1 l-lo-nerved. its palea nearly as 

 lon<r. ovate, jmbescent; fertile tloret ovjil, 4..') mm. loii'i, rmooth 

 outside, but lloral glume and palea pubescent on the inner or ujiper 

 side. 



California, PrimiU' SST. S. M. '/'ntci/, l.enniiini, Parisli, 



Southern California to Ciiili. 



2l>. P. autumnale M(»sc. Spreiii:. Syst. 1: \Vl^) {\>>-lh). I\ t'ni- 

 giloKwnXh. Hnum. IM. 1 : ;3(J (I8'2!i). I\ ilit'i'njnis Muhl. (iram. 

 120 (1S17). 



Perennial: culms erect, ascendiiiif. branching at the base. 2-4 

 cm. high. Ligule obtuse, blades numerous, flat, smooth or 

 s])aringly hairy, •2-.") cm. long. ',\-'^ mm. wide. I'anicle ))artially 

 included by the upper sheath, elTuse. rays capillary, few flowered, 

 bearded in the axils. Spikelets 1-0 cm. long, single at tiu' end of 

 rough, unbranched pedicels, lanceolate-oblong, about ;i mm. long, 

 first glume minute, secoiul glume lance-ol)l()ng, miuuti'ly hairy 

 along the margins and between the nerves, ."J-.o-iu'rved, third glume 

 little longer, 5-nerved, otherwise like the former glume; fertile 

 floret lanceolat(>-oblong, brown. 2.0 nnu. long. 



Illinois, r. S. Ih'pl. At/ricffL 44 from Patterson; J'afierso)! 

 ;Jo81. 



Sand hills. Illinois and southward. 



;50. P. brachyanthum Steud. Syn. PI. Gram. GT (1S55). /*. 

 ^parsijhrum Yasey, Contrib. U. S. Nat. Herb. 3:34 (18!»2). /'. 

 (iHHustifoUum Chapm. Fl. S. States. 574 (18G0) uot Ell. 



Culms w-eak, slender, ditTuse, branching, 50-80 cm. high. 



