185 



Fig. 179, CAMPULOSUS CHAPADENSIS Trin. Icon. Gram. 3 : 303. lS3fi. 

 {Ctenium chapadense Doell in Mart. Fl. Bras. 2^: 73. 1878.)— An erect perennial 

 8-12 dm. (2i°-4°) high, with narrow leaves and usually single terminal, more or 

 less curved spikes 5-15 cm. (2'-6') long. Sheaths loose, shorter than the inter- 

 nodes; leaf-blades rigid, involute, 10-20 cm. (4'-8') long, 3-4 mm. (li"-2") wide. 

 Spikeletsabout4mm. (2") long, exclusive of the awns; first glume about 2.5 mm. 

 (li") long, bearing an awn at the apex of about the same length; second glume 

 1mm. (i") longer, bearing an erect dorsal awn; flowering glume (6) strigose 

 above, ciliate on the margins. The empty glumes of C.aromaticus are shown 

 by a'.— Florida, in the " fiat woods " region (South America). July to October. 



More slender than C.aromaticus, with narrower glumes and more delicate 

 and longer awns, and smaller spikelets, divergent from the axis, not pectinate. 



