LIST OF AUTHORS 



Brand, Charles J. Stapfia cylindrica in Minnesota 71 



Butters, Fred. K. Observations on Trichogloca lu- 



bnca 



Cardot, Jules. Two new species of Fontinalis 129 



Crosby, Caroline M. Observations on Dictyosphaeria 61 

 Evans, Alexander W. Report on two collections of 



Hepaticae from northeastern Minnesota 141 



Fink, Bruce. Contributions to a knowledge of the 

 lichens of Minnesota. — VII. Lichens of the 



northern boundary 167 



Freeman, E. M. Symbiosis in the genus Lolium 329 



Hillesheim, Catherine. Some observations on the stain- 

 ing of the nuclei of freshwater algae 57 



Holz, F. L. Observations on Pelvetia 23 



Holzinger, John M. The moss flora of the upper Min- 

 nesota river 109 



Hone, Daisy S. Petalonema alatum in Minnesota .... 47 



Hone, Daisy S. Minnesota Helvellineae 309 



Leavitt, Clara K. Observations on Callymenia phyllo- 



phora J. Ag 291 



Lilley, Gene. Xitella batrachosperma in Minnesota... 79 

 Lyon, Harold L. The Pteridophytes of Minnesota... 245 



Lyon, Harold L. ,The embryogeny of Ginkgo 275 



Nelson, N. P. B. Observations upon some algae which 



cause "water bloom.'' 51 



Mueller, Olga. Observations on Laminaria bullata 



Kjellm 303 



Polley, Jessie M. Observations on Physalacria inflata 



(S.) Peck 323 



Powell, Chalmer. Observations on some calcareous 



pebbles 75 



Ramaley, Francis. Observations on Egregia menziesii 1 

 Rosendahl, C. O. An addition to the knowledge of the 



flora of southeastern Minnesota 257 



Rosendahl, C. O. A new species of Razoumofskya. . . . 271 

 Schneider, Albert. Outline of the history of legumi- 

 nous root nodules and rhizobia with titles of lit- 

 erature, concerning the fixation of free nitro- 

 gen by plants. III 133 



Schrader, Herman F. Observations on Alaria nana 



sp. now i 157 



Skinner, S. A. Observations on the tide pool vegeta- 

 tion of Port Renfrew 145 



Warner, Florence M. Observations on Endocladia 



muricata (P. and R.) J. Ag 297 



Wheeler, W. A. Catalog of Minnesota grasses 83 



Wheeler, W. A. The Umbellales of Minnesota 237 



