XXVII. MINNESOTA HELVELLINE^E. 



Daisy S. Hone. 



The following is a list of Minnesota Helvellineas collected at 

 various times since 1886. 



In the determination of these species, Dr. H. Rehm's work 

 has been carefully consulted, as have also among many others 

 the British works of Phillips and Massee and the American 

 papers of Peck and Morgan. These works have been used 

 freely in the descriptions, though only where they agree with 

 my observations on the Minnesota plants. Krombholz's plates 

 have been compared and cited under each species. Compari- 

 sons have also been made with the Exsiccatas in the University 

 Herbarium and the results of such comparisons have been noted 

 in each case. Schroeter's generic classification as outlined in 

 Engler and Prantl, Die Naturlichen Pflanzenfamilien, has been 

 closely followed. 



All drawings were made with the aid of an Abbe camera 

 lucida, usually from material preserved in formalin or from 

 dried material soaked in water. In a few cases fresh material 

 was used. The photographs were taken by Mr. C. J. Hibbard, 

 photographer on the Minnesota Geological and Natural History 

 Survey. All species, described are now in the collection of the 

 Museum and Herbarium of the University. They are pre- 

 served in a mixture of two per cent, formaline and seventy per 

 cent, alcohol and also in the dried condition. 



Eight genera with fourteen species and two varieties here 

 reported are from Minnesota. Five species belong to the Geo- 

 glossaceas and nine to the Helvellaceas. No member of the 

 Rhizinaceae has yet been reported, but the common species of 

 Rhizinia probably occurs in the State. Specimens marked * are 

 those from which the photographs have been taken. The 

 reports of localities are given in counties. 



I wish to express by thanks for the aid and supervision of 

 Professor E. M. Freeman, of the University of Minnesota, 

 under whose direction the work was done. I also wish to 



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