(56) 



siderably less carbonaceous matter that much progress can be 

 made. All of my specimens have been sketched immediately, 

 before becoming dry, so that they are fairly satisfactory ; the 

 specimens however might almost be thrown away as far as 

 concerns their value as types. 



While usage would sanction the designation of poor speci- 

 mens of doubtful botanical affinities as " sp." after referring 

 them provisionally or otherwise to some genus, which prac- 

 tice is supposed to obviate any undue definiteness on the part 

 of the describer ; the writer in these notes has followed the 

 laudable practice of Professor Ward, as quoted above, in be- 

 lieving that whatever is worth mentioning is worth a name. 



Acknowledgment is due Dr. Arthur Hollick, of the New 

 York Botanical Garden, and Professor W. B. Clark, of Johns 

 Hopkins University, for material assistance. The specimens 

 are all deposited at the New York Botanical Garden. 



CONIFERAE. 

 Geinitzia Endl. Syn. Conif. 280. 1847. 

 This is an entirely extinct genus of the Taxodieae with 

 several species on both sides of the Atlantic : G. cretacca 

 Unger (Austria), G. formosa Heer (America and Quedlin- 

 burg), G. hyfe^'borea (Greenland), G. sp., from the Da- 

 kota, and G. Jenncyi Font, from the Lower Cretaceous of the 

 Black Hills. It was founded by Endlicher in his Synopsis 

 Coniferarum to include certain forms referred by Geinitz to 

 Sedites and Arancarites and by Corda to Cryftomeria. 

 Among the former was Arancarites Reichenhachi oi Geinitz, 

 which Heer in 1868 identified with the living genus Sequoia. 

 Since that date this plant has been almost uniformly called 

 Sequoia Reichenhachi, and many place Endlicher's Geinitzia 

 cretacea under it as a synonym. Others retain the older forms 

 under Geinitzia. Ward contends that the retention of the 

 genus Geinitzia logically carries Sequoia Reichenhachi with 

 it into that genus as the type, while on the other hand the 

 recognition of Sequoia Reichenhachi logically abolishes the 

 genus Geinitzia. 



