112 PANUAl'E/E. 



Spikelets in pairs on uiiet|Uiil iJi'diccls. linear-lanceolate, 4 mm. 

 long, clothed with numerous soft white or brewn hairs, as long as 

 the spikclet, first glume minute, second lanoeolate. 3-nerved. nearly 

 as long as tlie spikelct. third glume ovate-lanceolate. 5-nerved ; no 

 j)alea : fertile floret smooth, brown, ovate-lanceolate, niucronato, 

 3.0 mm. long. 



Florida, U. S. Dcpt. AgricnJ. Xo. 80 from Curtiss; Texas, 

 XeaUcy. 



8. P. lachnanthum A. firay, Pacif. Kail. IJep. 7:21 (185:). 

 Culms rather slender, (JO-90 cm. high. Leaf-blades numerous 

 below, scabrid. 7-15 cm. long, 2-4 mm. wide. I'anicle slender, 

 contracted, 15-20 cm. long, the branches fewer and shorter than 

 in the i)receding. Spikelets in pairs, oval-lanceolate. 3 mm. long. 

 In other respects much like P. hui<rfiaii II. »lt K. 



Mexico, PrinyJe 378 ; Arizona, l^rinyh ; California, Palmer 

 348. 



n. P. tenerrimum Kunth. Kev. (J ram. 1 :3n (182!t). Tn'cJiar/ine 

 tenuis Nees, Agrost. Bras. 80 (1829). 



A very slender erect perennial, 30-(;0 cm. high, sparingly 

 branched at the base. Leaves of the culm 8-12, spai'ingly hairy, 

 on sterile shoots and the culms alike. Sheaths longer tlian the 

 internodes ; lignle a mere ring ; blades flat, erect, rather abruptly 

 pointed, 3-4 cm. long, l.r)-2.5 mm. wide, the npper 5-10 <mii. 

 long. Spikes 1-3 cm. long, rays ;i-(), single, slender, flower- 

 bearing for the whole length. Spikelets narrowly elliptical. 2.3-2.6 

 mm. long, clothed with ajijiressed hairs, first glunu- minute, secoml 

 and third equal, the former 3-nerved, the latter 5-nerved, floret 

 brown, nearly as long as the longest glumes. 



Texas (IVcor County and Del IJio). XcnJIe i/ iorV. S. Nat. JFus. 

 in 1892. the oidy localities known in North America. ALso fuuud 

 in Brazil. 



10. P. platyphyllum Munro. Wright, in Sauv. V\. Cub. 107 

 (1873). 



Culms decumbent, branching, 30-00 cm. high. Leaf-blades 

 and sheaths pale green, firm, smooth or nearly so. blades flat^ 

 broad at the base, G-10 cm. long, 5-8. cm. wide. Spikes 3-7, 



