288 PROCEEDINGS OF THE ACADEMY OF [1886. 



name would be needed for Le Conte's plant, and as the name P, 

 gracile had been earlier appropriated by Rudge for a S. American 

 plant, Kuuth distinguished this by the name of P. tenue. An 

 inspection of the Le Contean specimens in the Herb. Mus. Paris 

 will probably settle this question. Kunth, however, refers 

 Michaux's P. plicatulum not only to P. pitrpurascens, Ell., but 

 also to P. undulatuvi, Poir, as if Michaux had confused two 

 species, which is very likely to be the case. On the other hand, 

 if Kunth saw Le Conte's specimens, and they were like these of 

 the Herb. Acad. Phila., he should have recognized them as the 

 P. undulatum, Poir. 



Le Conte, at the end of his description of this species, sa3^s, 

 " Muhlenberg Gram, sub Paspalo,No. 8," with the description of 

 which Le Conte's does not agree. Furthermore, there is in Herb. 

 Torrey a specimen of Paspalum setaceum, Michx., which is also 

 referred to '' Pasp. No. 8, Muhl. Gram.," and which agrees suffi- 

 ciently well with the description. 



i;5. P. altissimum, Le Conte. 



The single specimen to which this name is attached is evidently 

 what is commonly called P. Floridanum, Michx., for which, 

 according to Kunth, the earlier name of P. macrospermum^ 

 Flugge, must be adopted. Le Conte's specimen has only two 

 spikes, although his description says " spicis 4-5." The species, 

 however, or some forms of it, often have 4 to 5 spikes. One 

 form has pubescent leaves or sheathes, and one form is quite 

 glabrous. Le Conte mistook his No. 5 for P. Floridanum^ Michx. 



11. P. confertum, Le Conte. 



The specimen to which this name is attached is evidently P. 

 purpurascens^ Ell. Mr. Durand recognized this and attached a 

 ticket marked " resembling P. purpurascens, and I believe iden- 

 tical, E. D." On the same sheet is another specimen of the same 

 species, ticketed "P. putyurascens, Ell., Georgia, Dr. Baldwin." 

 Kunth gives both P. purpurascens, Ell., and P. confertum, 

 Le Conte, as if they were distinct plants. Probably he did not 

 see Le Conte's specimens. 



15. P. distichum, Linn. 



I find no specimens with a ticket in Le Conte's writing, but 

 there are in a sheet marked P. distichum, specimens noted as 

 coming from Le Conte, and others, Georgia, Baldwin. The 



