148 PANICACEiE. 



slightly ciliate, mostly shorter than the internodes ; blades reticu- 

 late-veined, elliptical-lanceolate, acuminate, 4-8 cm. long, 8-14 

 mm. wide, sparingly ciliate. Spikes 5-8, on 7-10 centimeters of 

 the axis, the longest 3-5 cm. long. Spikelets in clusters of 2-5 

 on the primary branches, elliptical, 3 mm. long, first glume 3- 

 nerved, 2 mm. long, with an awn 2-5 mm, long, second a little 

 longer, 5-nerved, unawned, third still longer, 7-9-nerved, unawued; 

 fertile floret 2.5 mm. long. 



Mexico (Oaxaca), Pringle 4944. 



Texas, Mexico to Brazil. 



Another form or variety is No. 463, Dr. E. Palmer, Jalisco, 

 Mexico, in 1886. In the latter the racliis is clothed with hairs ex- 

 tending beyond and covering the spikelets. Spikelets 12-20 in an 

 oblong spike 1 cm. long, oval 2 mm. long, awns very slender and 

 rough, third glume awnless. 



29. (11) CHa:TlllM Nees, Agrost. Bras. 269 (1829). 



BerchtoUia Presl. Keliq. Ha?nk. 323, t. 43 (1830). 



S})ikelets narrow in a close panicle, the pedicel articulate near 

 the middle, 1-flowered with 3 empty glumes (tlie tliird standing for 

 a second floret), first and second empty glumes terminating in 

 bristle-like awns, second usually larger with a longer awn, third 

 shorter with a shorter awn; fertile floret firm, shorter, acuminate. 

 Stamens 3. Styles distinct. Grain oblong, enclosed, but not 

 adherent. 



Rather stout grasses with narrow leaf-blades Panicle terminal 

 and dense with slender rays. 



1'here are two species known, one belonging to Mexico, the other 

 to Brazil. 



ClicBthnn has nearly the spikelets of Oplismenns, the outer 

 ghimes being well developed and awned; the inflorescence is 

 quite difl^erent. Kunth places it with Oplismenns, Doel with 

 Pdnicum. Fournier retains Cltmimm for one of two species and 

 places the other in the genus BercMoldia. 



1. C. bromoides (Lam.) Benth. Journ. Linn. Soc. 19:46 (1881). 

 Panicum hroinoidoi Lam. 111. 170 (1791). 



Culms hard, smooth, compressed, about 60 cm. high, from pe- 



