272 



POA(E.K. 



1-1.5 mm. long, the awn 1.5-3 mm. long; llonil glume ovate, acute, 

 with stil! hairs at tlie biise, scabrous above, 2 mm. long, the slender 

 wavy awn 1-^ cm. long; palea ovate, 1.5 mm. long, nerves veiy 



Fig. 48.— Pereilema crinita. A, spike; li. sjiikelet; c, floret; d, floral glume; 



e, grain, ('rrinius.) 



near each other. Grain nearly 1 mm. long. The sterile spikelets 



reduced to clusters of awns. 



Mexico, Priiif/Ie 1744. 



2. P. ciliatum Fourn. ITemsl. IJiol. Centr. Am. Bot. 3:543 

 (1880). 



Culms branching freely. Leaves like those of P. criuitiim. Pan- 

 icle with the base inserted or but little exserted, spikelike, 6-8 cm. 



