201 



on the margins with somewhat ascending hairs, 7-9-nerved, the 

 mid-nerve prominent ; panicle broadly ovate, 3 cm. long or less, 

 its branches spreading or ascending, their ultimate divisions several 

 times longer than the spikelets, the main axis and usually the 

 lower branches sparingly pilose; spikelets about 1.5 mm. long, 

 divergent from the branches of the panicle, obovate, obtuse, the 

 first scale about one-half as long as the spikelet, thin membra- 

 nous, orbicular-ovate, obtuse, i-nerved, the second and third scales 

 equal in length, membranous, broadly oval, 7-nerved, the latter 

 enclosing a hyaline palet about one-half its length, the fourth 

 scale chartaceous, oval, white, enclosing a palet of equal length 

 and similar texture. 



Type specimen collected by the writer on Aug. 20, 1895, in 

 the " flatwoods " at Tampa, Florida, no. 2420a. A specimen in 

 the Columbia University herbarium collected by Chapman be- 

 longs here; no. 3875 of Wright's Cuban Collection of 1865, dis- 

 tributed as P. dichotoumm L., is also to be referred to this species. 



The narrower leaves, more slender culms, and smaller and 

 glabrous spikelets well distinguish this from P. cihatum Ell., to 

 which it is most nearly allied. 



