37 



in good condition. (Fig. 13.) These specimena are identical and are matched 

 by the following collections: 77 C. R. Ball, Louisiana, 1898; 3978 .S. M. Tracy, 

 Alabama, 1897. 



While it is possible that the specimen cited by Lamarck as collected by Sherard in 

 1721 may be different from Michaux's plant, yet Lamarck's description is cer- 

 tainly that of the latter. 



The appearance of the early simple form and the late branched form of this species 

 is so different that it is not to be wondered at that Lamarck considered them 



Pig. VS.—Panicum pubescens Lam: a, b. spikelets. Drawn from a specimen in the Herbarium of the 

 Paris Museum of Natural History, by A. H. Baldwin. 



distinct species and so described them, especially as he had only herbarium 

 material to deal with. 

 Tise original descriptions of Paniruiu xrnparivm and PaniaDu ptihcscetis are given 

 below: 



^' Panic en halais; Panicnni scoparium. 



"Panicum panicula ramosa subnudiflora, glumis ovatis striatis villosulis, foliis 



brevibus pubescentibus. 

 " D'apres les exemplaires de cette plante que j'ai vus dans I'herbier du citoyen 

 Jussieu, sa tige doit avoit environ un pied & demi de longueur. EUe est 



