Say on Shells, ^rc. 381 



I am indebted to the politeness of Mr. Collins, for the facts 

 on this subject relative to Muhlenberg's herbarium. He ob- 

 serves, " your Gnaphalium is certainly not the luteo-album of 

 Muhlenberg, which may not strictly be a native, but intro- 

 duced. Yours most approaches G. polycephalum Mx. Still, 

 from the decurrent leaves and other differential marks, it 

 appears to me to be a new species. Muhlenberg's collection 

 has it not." 



As the luteo-album is said to grow in New-England, yet so 

 far as my observation has extended it has not been found by 

 any of the botanists, I am induced to believe that this opinion 

 has arisen from some erroneous description of the plant which 

 is the subject of this paper. 



As the decurrent leaves of this Gnaphalium distinguish it so 

 obviously from all the other American species of Gnaphalium, 

 I propose to give it the specific name of decurrens. 



Specific description of Gnaphalium Decurrens (large life ever- 

 lasting.^ 

 Leaves lanceolate, broad at base, acute, decurrent, some- 

 what scabrous above, tomentose beneath ; stem leafy branched 

 spreading, about three feet high. — See the plate. — The plate 

 represents a section of the upper part of the plant. 



FOSSIL ZOOLOGY, &c. 



Art. XII. Observations on some Species of Zoophytes. 

 Shells, 4rc. principally Fossil, by Thomas Say. 



J.F the following descriptions and notices of some of the 

 animal productions of our country', chiefly fossil, and of which 

 some are but little known, should be found of sufficient in- 

 terest to occupy a place in the Journal of Science, they are 

 very much at your service for that work. 

 Vol. I. ...No. 4. 30 



