VOL. 36 JUNE, 1909 NO. 6 



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BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



€hmt 



MARSHALL AVERY HOWE 



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John Hendley Barnhart Tracy Elliot Hazem 



Jean Broadhurst William Alphonso Murrill 



Philip Dowell Charles Louis Pollard 



Alexander William Evans Herbert Maule Richards 



CONTENTS 



Osmotic theories, with special reference to ran't Hoff's law. 



J. B. DANDENO 283 



Some noteworthy Hepaticae from the state of Washington. (Plate 20.) 



LOIS CLARK 299 



Preliminary notes on the genus Usnea, as represented in New England. 



(Plates 21-23,) .,....,-....,. R. HEBER HOWE, JR. 309 



New species of fungi . CHARLES HORTON PECK 329 



A new fungus of the swamp cedar. (Plate 24-) . HOWARD J. BANKER 341 

 INDEX TO AMERICAN BOTANICAL LITERATURE _ 345 



PUBUSHED FOR THE CLUB 



THE NEW ERA PRINTING COMPANY 



LANCASTER, PA. 



