Howe: Preliminary notes on the genus Usnea 325 



neous records have crept in through a misunderstanding of the 

 genus. Let me here enter a plea for more complete data appended 

 to specimens, and a more common publication of authentic local 

 lists, in order that a better study of lichen distribution can be 

 worked out, which I feel sure would help In the labor of taxonomy 

 and broaden our whole knowledge of hchens. 



For kind assistance and permission to examine various her- 

 baria I am endebted to Dr. G. M. Allen, Mr. J. A. Cushman, 

 Mr. C. W. Johnson of the Boston Society of Natural History, Dr. 

 N. L. Britton, Dr. M, A. Howe, Dr. J. H. Barnhart, and Mr. R. 

 S. Williams of the New York Botanical Garden, Miss Mary F. 

 Miller of Washington, D. C, Prof. Bruce Fink of Miami Uni- 

 versity, Dr. Lincoln W. Riddle of Wellesley College, Mr. Fred. 

 LeRoy Sargent of Cambridge, Mr. W. D. Jackson, Bridgewater 

 State Normal School, Mr. Mintin A. Chrysler of the University 

 of .Maine, Prof. W, Whitman Bailey and J. Franklin Collins of 

 Brown University, Dr. Manton Copeland of Bowdoin College, Mr. 

 A. H. Norton, of the Portland Society of Natural History, Prof. 

 G. E. Stone of the Massachusetts Agricultural College, Mr. A. 



f 



S. Goodale of Amherst College, Miss M. A, Day of the Gray 

 Herbarium, Mr. J. S. Galbraith and Prof. S. F. Clarke of Williams 

 College, Mr. Witmer Stone of the Academy of Natural Sciences, 

 Philadelphia, Dr. Alexander W. Evans of the Sheffield Scientific 

 School, New Haven, Conn., Mr. C. C. Plitt of Baltimore, Md., 

 Dr. J. N. Rose of the U. S. National Museum, Washington, D. C, 

 and many others. 



Published New England records for the species of Usnca: 



Maine. -^ Harvey, 1894: floriday htrta, *' serotina,'' dasypoga, 

 plicata: Orono, Harvey ; Cumberland, Blake. 



Harvey, 1894: loiigissima : Greenfield. 



Eckfeldt, Wilson, & Cummings (in Rand & Redfield), 1894: 

 barbata^ florida^ hirta^ nibiginea^ ceratina^ dasypoga, plicata^ trick- 

 odea : Mt. Desert. 



Harvey, 1896; plicata, longissima : Jackman. 



Harvey & Knight, 1897 : plicata^ longissima : Jackman. 



New Hampshire. — Howe, 1906 ; ceratina (?) : Mt. Monad- 

 nock. 



Howe, \<^o%\ fiorida^ hirta, rubiginea^ strigosa, dasypoga (?), 



angidatay longissima : Mt, Monadnock region. 



