VI 



MINNESOTA BOTANICAL STUDIES. 



XXI. The grand period of growth in a fruit of Cucurbita pepo 



determined by weight, by Alex. P. Anderson. . . 238 

 XXII. A preliminary list of the mosses of Minnesota, by 



John M. Holzinger 280 



XXIII. A contribution to the bibliography of American 



algae, by Josephine E. Tilden 285 



XXIV. On the genus Cypripedium L., with reference to Min- 



nesota species, by Henrietta G. Fox 42-3 



XXV. Poisonous influence of various species of Cypripedium, 



by D. T. MacDougal 450 



XXVI. Tree temperatures, recorded by Roy W. Squires 452 



XXVII. Some Hepaticae of Minnesota, by John M. Holz- 

 inger 460 



XXVIII. A study of some Minnesota Mycetozoa, by E. P. 



Sheldon 462 



XXIX. On the distribution of the North American Helvel- 



lales, by Lucien M. Underwood 483 



XXX. A contribution to the physiology of the root tubers 

 of Isopyrum biternatum (Raf.) Torr. and Gray, by 



D. T. MacDougal 501 



XXXI. Determinations of plants collected by Dr. J. H. 

 Sandberg, in Northern Minnesota, during 1891, by 



J. M. IIolzinger 517 



XXXII. Estimation of the changes in dry weight of leaves 

 of Helianthus, by S. Thompson and W. W. Pen- 



dergast 575 



XXXIII. Some Muscineae of the northern boundary of Minne- 

 sota, collected by Conway MacMillan, during 



1895, by J. M. Holzinger 579 



XXXIV. Additional extensions of plant ranges, by E. P. 



Sheldon 583 



XXXV. Notes on the moss flora of Minnesota, by J. M. Holz- 

 inger 590 



XXXVI. List of fresh- water algae collected in Minnesota 



during 1895. by Josephine E. Tilden 597 



XXXVII. A contribution to the life-history of Pilinia diluta 

 Wood and Stigeoclonium flagelliferum Kg., by Jose- 

 phine E. Tilden 601 



XXXVIII. Pollination and reproduction of Lycopersicum escu- 



lentum, by Bruce Fink 636 



XXXIX. A re-arrangement of the North American Hyphomy- 

 cetes I, by Roscoe Pound and Frederic E. 



Clements 644 



XL. On the stem-anatomy of certain Onagraceae, by 



Francis Ramaley 674 



XLI. A new Hypuum of the section Caliergon, by John M. 



Holzinger 691 



XL 1 1. Contributions to a knowledge of the lichens of 

 Minnesota. I. Lichens of Lake of the Woods, by 

 Bruce Fink 693 



