IOWA ACADEMY OF SCIENCES. 103 



[ From proceedings Iowa Academy of Sciences for 1893. Vol. I. Part IV] 

 ADDITIONS TO IOWA FLORA. 



PROF. B. FINK, FAYETTE, IOWA, 



In my collecting last summer about Fayette, I found the following plants, 

 some of which, so far as I know, have not been reported for Iowa. Those marked 

 with a " star " have been examined by various botanists. The others I report on 

 my own determination : 



* Habenaria tridentata, Hook. Borders of woods; rare. 

 * H. psi/codes, Gray. Wet river banks; rare, new. 



* H. hooker i, Torr. var. oblongifolia, Paine. As common as the type here; 

 new. 



Dicentra Canadensis, D. C. Woods, rare. Also reported from Decorah by E. 

 D. W. Holway. (Proceedings Iowa Academy of Sciences, Vol. I, Pt. II, p. 16.) 



MILDEWS. 



In this list I have adopted the synomony given by Prof. Burrill in North Ameri- 

 can Pyrenomycetes. 

 X Sphaerotheca Humuli (D C) Burrill on Agritnonia Eupatoria. 



S. Panxosa, (Wallr.) Lev. on Rosa blanda. 



*3. Mali, (Duby.) Burrill on Ptjrus Mains also reported from Ames, by Prof. 

 L. H* Pammel and G. W. Carver abundant on young suckers, New. 



S. Mors-uvae, (Schw.) B. and C. on Ribes. 



S. Castagnei, Lev. on Sonchus oleraceus. 



Erysiphe communis, (Wallr.) Fr. on Astragalus Canadensis. 



E. Cichoracearum, D C on Phlox Drumondii. 



*E. Galeopsidis, D C on Scutellaria lateriflora, New. 



E. Gramimis, D C on Poa pratensis. 



Uncinula Clintonii, Peck, on Tilia Americana. 



U. necator (Schw.) Burrill en cultivated grapes (Vitis labruscce). 



U. circinata, C. & P., Acer barbatum. 



IT. macrospora, Peck, on Alnus Americana . 



U. Salicis, (D C), on Populus tremuloides. 



Phyllactinia suffulta (Reb.) Sacc. on Comus stolonifer, Xanthoxylum 

 Americanum. 



(<rWl ) 



