310 



Bulletin No. 205 



[March, 



Panicum meridionale Ashe 



(Fig. 76) 



Hitchcock and Chase '10, 210. 



Vernal form with slender culms 6 to 15 inches tall; culms and 

 sheaths pilose ; nodes bearded ; sheaths shorter than the internodes ; 

 blades .5 to 1.5 inches long, 2 to 4 mm. Avide, sparsely long pubescent 

 on the upper surface and short pubescent on the lower ; panicle small, 

 the axis smooth or short pubescent; spikelets 1.3 to 1.4 mm. long, 

 densely pubescent. Autumnal form much branched from all the nodes, 

 the branches forming small tufts; leaves and panicles not very much 

 reduced ; panicles hidden by the leaves. 



This species is found in sandy woods or shady places, in sterile soil 



in the woods, or in peat soil on the prairie. It closely resembles P. 



implicatum but the culms are shorter and more slender and the plants 



less pubescent. 



COOK CO. Chicago, Hill 145. Kensington, Hill, July, 1890; Irondule, Chicago, 

 Hill, Jiily, 1913. KANKAKEE CO. South of Kankakee, Hill, July, 1913. 



76 



79 



Pigs. 74-80. — Spikelets: 74, P. huachucae; 75, P. implicaUim; 76, P. meri- 

 dionale; 77, P. praecocius; 78, P. pseudopuhescens ; 79, P. tennesseense ; 80, 

 P. villO'Ssissirmim 



Panicum praecocius Hitchc. and Chase 

 (Fig. 77) 

 Hitchcock and Chase '10, 226. 



Vernal form with rather stout culms, 6 to 24 inches tall, often 

 forming spreading tufts; culms and sheaths densely long pubescent; 

 sheaths much shorter than the internodes; ligules 3 to 4 mm. long; 

 blades 2 to 4 inches long, 4 to 6 mm. wide, long pubescent on both sur- 

 faces, the hairs nearly equal to the width of the blade; spikelets 1.8 



