90 NATURAL HISTORY BULLETIN. 



species giving time of first blooming in which several of 

 the crowfoot family are included. In the next bulletin 

 from the Agricultural College Prof. Halsted gives a pre- 

 liminary list of Iowa weeds, pages 36 to 47 in which nine 

 species of the Ranunculaceae are included. They are 

 Anemone dichotoma L,. \_A . pennsylvanica L,., A. cana- 

 densis L,.], Thalictrum dioicum L., T. polygamum Muhl. 

 [a continued error], T. purparascens L,., Ranunculus 

 abortivics L., R. repens L,., R. bulbosus L,., R. acris L,., 

 and Delpliinium aznreum Mx. 



From a weed standpoint none of these are of much im- 

 portance. Ranunculus abortivus L,. is common but inof- 

 fensive. R. repens L,., R. bulbosus L,., and R. acris h. are 

 of such infrequent occurrence as not to be noticed except 

 by a botanist. Delphinium azureum Mx. would be better 

 placed among our ornamental species. 



The first five editions of Gray's Manual do not include 

 our limits but the sixth edition published in 1890 does. 

 However only three species of the crowfoot family are di- 

 rectly referred to Iowa. They are: Raiiunculus circinatus 

 Sibth., Cop/is trifolia (L,.) Salisb., and R. a finis R. Br. 

 The former species has been observed a number of times 

 by Iowa collectors but the latter two seem entirely to have 

 escaped the vigilance of all. No Iowa list mentions them 

 and our long search fails to find them. 



Prof. Hitchcock published his catalogue of the Antho- 

 phyta and Pteridophyta of Ames, Iowa in the fifth volume of 

 the Transactions of the St. Louis Academy of Science, the 

 same having been read Oct. 20, 1890. The nomenclature 

 used is a modification of Gray's Manual, 6th edition, the 

 intention being to adhere to the law of priority. Twenty- 

 four species are enumerated and commented upon. All 

 these species still belong to the flora of Iowa and no errors 

 seem to have been made in identification. 



Prof. Pammel in Proceedings of Iowa Academy of 



