—7i— 



Rcppert; Winneshiek county, Prof. Arthur; Hardin county, Prof. 

 Pommel. 



SELAGINELLACEiE. 

 Sclaginclla rupestris Spring. Specimens in our collection are 

 from Dubuque, Muscatine, and Lyon counties. The species has 

 been reported from Winneshiek and Benton counties. Dry soil ; 

 woods, cliffs ; infrequent. 



ISOETACE.E. 



Isoctcs melanopoda J. Gay. Many years ago Dr. Vasey col- 

 lected specimens of this species at Clinton, Iowa. Species of 

 Isoetes are rare or absent within our limits, or else have been 

 entirely overlooked by collectors. 



MARSILIACEJE. 



Marsilia vcstita Hook. & Grev. Specimens in our collection 

 are from Lyon county, Iowa, where they were collected by Prof. 

 Shimek. Many years ago Dr. Cousins collected this species in 

 Iowa near the Mississippi river — so state some of the early edi- 

 tions of Wood's "Class Book of Botany." 



SALVINIACE. 



Azolla caroliniana Willd. Frequent in the sloughs and lagoons 

 of the Mississippi river in Muscatine and Louisa counties. This 

 species was also collected in similar situations by Charlotte M. 

 King in Allamakee county. 



Iowa City, Iowa. 



FERNWORT NOTES.-III. 



By Willard N. Clute. 



Nephrodium unitum in Texas. Among the pleasing res ilts 

 of the publication of the Fern Flora of Texas, in the April Fern 

 Bulletin, is the activity in fern hunting that has followed. In 

 this. Mr. Reverchon, the author of the paper mentioned, has been 

 a leader, and he has recently been so fortunate as to add Ne- 

 phrodium unitum to the list of species. Hitherto, the State of 

 Florida has been regarded as the only one in the Union in which 

 this fern grows, and the finding of it in Texas adds greatly to 

 its known range. The species is tropical in its distribution, but 



