IOWA ACADEMY OF SCIENCES. 103 



BIBLIOOnAPHY. 



Allen. Grant, " Knowledge of Sunflowers," 1884. 



Asa Gray, " Notes on Movements of Anchceoiuoi in Sunflowers," Proceedingrs 

 Acad. Nat. Sc, Phila., 1884. pp. 287-288. 



Th. Meehan. " On Elasticity in the Filaments of Helianthus," Loc. cit., p. 200. 



C. Schwartz, "Form of Stigmata Before and After Fertilization in Different Fam- 

 ilies,'' Pringsheim's Jahrbuch. Wiss. BotanikXV. Heft. I. 



Hermann Mueller, " Fertilization of Flowers." 



Sir John Lubbock, " British Wild Flowers in Relation to Insects." 



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 1 report on 

 my own determination: 



* Habeiiaria tridentata. Hook. Borders of woods; rare. 



* H. pf^i/codes. Gray. Wet river banks; rare, new. 



* H. hook-eri, Torr. var. ohlonglfolia, Paine. As common as the type here; 

 new. 



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

 D. W. Holway. (Proceedings Iowa Acadomy 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. 



Sphaerotheca Hl'>iuli(D C) Burrill on Agrlmonia Eupatoria. 



S. Pannosa, (Wallr.) Lev. on Rosa hlanda. 



*S. Malt, (Duby.) Burrill on Pi/rus 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 Rihes. 



S. Castagnei, Lev. on Sonchus pleraceus. 



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



E. CiCHORACEARUM, D C On Phlox Drumondii. 



*Y,. Galeopsidis, D on Scutellaria lateriflora. New. 



E. Gramimis, D C on Poa pratensis. 



Uncinula CLiNroNii. Peck, on Tilia Americana. 



U. nkcator (Schw.) Burrill en cultivated grapes {Vitis lahruscce). 



U. CIRCINATA, C. & p., Acer bnrhntum. 



U. macrospora, Peck, on Abuts Americana. 



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



Phyllactinia suffulta (Reb.) Sacc. on Cornus stoloni/er, Xanthoxylum 

 Americanum. 



