124 THK AMERICAN MIDLAND NATURALIST 



Polygon id)! II yd ro pi per. 



Allionia hirsuta 



C 'erastium vulgatum 



Oxygraphis ( ymbalaria 



*Sisymbrium altissimum 



*Eruca sativa 



*( amelina microcarpa 



*( onringia or.ientalis 



. iilanthus glandulosus 



*Viola emarginata 



*Cicuta occidental is 



Daucits ( 'arola 



*( 'uscuta Gronovii 



*Stachys palustris 



Hedcoma pidegioides 



Lycopus lucidus 



*Gratiola virginiana 



Veronica arvensis 



Symphoricarpos occidental is 



*Taraxacum erythrospermum 



Lactuca pulchella 



Heterotheca subaxillaris 



Aster niissonriensis 



*Bidens acuta 



*Bidens vitlgata 



*C'cntaurea nigra. 



To make the present catalogue more nearly complete the 

 following list is given of additional species recorded by Hitch- 

 cock (see note at end of introduction). Those marked (P) were 

 reported from Pottowatomie County only, those marked (M) 

 from Marhsall County only; the rest from Riley or also from 

 one of the other counties. Mr. Robert Schmidt lias kindly checked 

 over the herbarium specimens of some of the species which seemed 

 less likely to be found, and the locality data i^ given in the follow- 

 ing list for these species. 



Woodsia obtusa (Spreng.) Torr. 



Dryopteris Thelypteris (L) A. Gray. (P). 



Notholaena dealbata (Pursh). Kunze. 



Potamogeton pectinatus L. 



Potamogeton obtusifolius Mert. & Koch. 



