82 . STATE BOARD OF AGRICULTURE. 



ADDITIONS TO THE MICHIGAN FLORA SINCE 1892. 



BY C. F. WHEELER. 



Since the publication of the "Michigan Flora" in 1892 there has been 

 a great revival of interest in botanical exploration in our State. Copies 

 of the "Flora" were sent at that time to teachers and others interested 

 in the study of our plants, with the request that an active out-door ex- 

 amination of local plants be made. The results are encouraging. Up to 

 date, 236 plants new to the State have been discovered. The names of 

 those plants indigenous to Michigan are printed in heavy, broad-faced 

 type. The names of those plants which are introduced into our State 

 from the Old World, mainly as weeds are printed in small capitals. Credit 

 has been given to those who have first .sent to the College herbarium 

 plants new to the State. 



Clematis verticillaris, D.C. 



Norway,— S. M. Tobey. Rare. 



Anemone patens, L., var. Nuttalliana, Gray. 

 Norway, — S. M. Tobey. Infrequent. 



Ranunculus Purshii, Richards. 

 Topinabee,— S. H. Camp; Chandler's Falls, Atlanta. Alpena,— C. F. Wheeler. 



R. Lapouicus, L. 



Thunder Bay, Lake Superior.— Britton and Brown. 



R. nmltiftdus, var. terrestris, Gray. 



Ann Arbor,— Miss M. H. Clark; Washington,— Dr. D. Cooley: Lansing.— C F. Wheeler. 



R. Macounii, Britton. 

 Lake Superior,— Britton and Brown. 



R. REPENS, L. 



Port Huron,— C. K. Dodge, "A weed in Lawns;" Rochester, — W. A. Brotherton and O. A. Far- 

 well; Montreal River,— O. A Farwell. 



Trollius laxus, Salsib. 



Linden,— Dr. A. W. Chase. 



Cardamine Penusylvanica, Muhl. 

 C. parviflora, L. 



These take the place of C. hlrsuta, L, which I have never seen in Michigan. 



Arabis Holboellii, Hornem. 



Thunder Bay, ^Alpena county. The most easterly known station for this western species. 

 C. F. Wheeler. 



A. lyrata, var. occidentalis, S. Watson. 

 Bowers' Harbor, Grand Traverse Bay, Alpena,— C. F. Wheeler. 



A. coiifinis, var. brachycarpa, Wats, and Coult. 

 Keweenaw county,— O. A. Farwell; Marquette, Alpena,— C. F. Wheeler. 



Camelina microcarpa, Anderz. 

 A weed which is becoming naturalized from Europe. 



Nasturtium sylvestre, R. Br. 



Detroit,— O. A. Farwell. 



Conringia orientalis, (L.) Dumort. 



A bad weed in grain fields, becoming introduced into Northern Michigan from the Northwest 

 O. A. FarwelL 



Erysimum parviilorum, Nutt. 

 Probably introduced from the West. Clifton,— O. A. Farwell. 



