Geological and Natural History Survey of Minnesota. 

 Conway MacMillan, State Botanist 



Minnesota 

 Botanical Studies 



Contents 



XXIII. The embryogeny of Ginkgo, Harold L. Lyon - - 275 



XXIV. Observations on Callymenia phyllophora J. Ag. , 

 Clara K. Leavitt 291 



XXV. Observations on Endocladia muricata (P. and R. ) J. 



Ag., Florence Jf. Warner --------- 297 



XXVI. Observations on Laminaria bullata Kjellm., Olga 



Mueller ---_ ^03 



XXVII. Minnesota Helvellinese, Daisy S. Hone 309 



XXVIII. Observations on Physalacria i?ijlata (S.) Peck, Jessie 



M. Polley 323 



XXIX. Symbiosis in the genus Lolium, E. E. Freeman ■ - 329 



Third Series 



Part III - - October 18, 1Q04 



MINNEAPOLIS. MINN. 

 1904 



