73 



Fig. 67. CHLffiTOCHLOA MACROSPERMA Scribn. & Merrill, U. S. Dept. 

 Agr. Div. Agros. Bui. 2 1 : 33. 1900. (Setaria Cf/mposita of Chapm. Fl. So. U. S. and 

 of Scribn. U. S. Dept. Agr. Div. Agros. Bui. 7 : 85, fig. 67 ed. 1 and 2, not of 

 H. B. K.)— A very smooth, stout perennial, C-12 dm. (2°-4°) high, with broad, 

 flat leaves and branching, bristly panicles 10-25 cm. (4'-10') long. Nodes 

 smooth; sheaths glabrous; leaf blades linear-lanceolate, 1-3 dm. (4'-12') long, 

 10-20 mm. (5'MO") wide, slender-acuminate at the apex, scabrous, or sometimes 

 nearly glabrous; rachis sparingly villous; setae solitary, 1.5-3 cm. (I'-l^') long, 

 green, antrorsely scabrous. Spikelets (a, b, c) short pedicellate, 3 mm, (li") 

 long; second glume short-apiculate, 5 or rarely 7 nerved, third glume 5-nerved, 

 flowering glume narrowly ovate, acute, striate, finely transversely undulate 

 wrinkled.— Shell islands ani keys, sometimes in old fields, Florida, Texas. 

 July to October. 



