The Iowa Naturalist. 37 



is the R. villosus of the Illustrated Flora and of most American authors, 

 not of Alton. 



3C3. For Fragaria vesca L. read F. amsricana (Porter) Britton. 

 Our plant is now considered distinct from the European species which 

 is sparingly introduced in the Eastern states. 



324a. TrifDlium aureum Poll. (T. agrarium L. in part.) Hop clov- 

 er Locally abundant in the streets of Estherville; a native of Europe. 

 356a. Polygala incarnata L. Very rare; found but once near 

 Armstrong. 



368a. Acer negundo L. Box Elder. One of our commonest trees, 

 accidentally omitted from the previous list. 



382. For Viola obliqua Hill, read V. papilionacea Pursh. (V. ob- 

 liqua of the illustrated Flora, not of Hill.) 



395a. Panax quinquefolium L. Ginseng. Low woods, infrequent; 

 Iowa Lake and Armstrong's Grove. 



398a. Conioselinum chinense (L.) B. S. P. Low ground in woods, 

 west of Estherville. A single, rather immature specimen, collected by 

 Mr. T. J. Fitzpatrick in July, 1903. The leaflets vary from the type 

 in not being cut into linear segments. 



402a. Washingtonia longistylis (Torr.) Britton. Sweet-cicely. 

 Rare in lo'.v v/oods. 



418a. For Fraxinus americana L. read F. lanceolata Borck. 

 [F. viridis Michx. f.] Green Ash. Our form very closely resembles 

 the former species except in the character of its fruit. However the 

 true While Ash probably occurs here. 



432a. Acerates viridiflora (Raf.) Eaton. Frequent on dry prairies. 

 481. For Gerardia purpurea L. read G. paupercula (A. Gray) 

 Britton. 



513, For Lactuca scariola L. read L. virosa L. to which all our 

 pbnts seem to belong. 



530. For Kuhnia eupatorioides L. read K. glutinosa Ell. This is 

 now recognized as a distinct species from the former which ranges from 

 New Jersey to Ohio and Texas, and probably does not occur in Iowa. 



55 1 a. Brachyactis angustus ( Lindl. ) Britton. (Aster angustus Torr. 

 & Gray.) This interesting plant was for the first time collected in 



