83 



Harsh cress. 

 Distribution and habitat: 



Eurasia; apparently naturalized from Europe* 

 "In wet places, nearly thruout N. A. except In extreme 

 north" (B. M.)» "Common" (G. M.)' 



PI. Mon. Co.: "Muddy shores » ditches, wet places; 

 common." PI. Buf. Vic: listed. C. P. s Wet places, 

 borders of pools, etc. The typical form, nearly smooth 

 and with oblong pods. Is found In Cascadllla raylne, a 

 few; and at the Marl Ponds of Cortland." Loo. Herb* s 

 Cascadllla Cr* near Ems Hollow - only typical specimen 

 from the Cayuga flora ; 2 sheets markt "Fall Cr* Low ground" 

 and "Fall Cr- Marsh" hare been corrected by the writer 

 as yar. hlsplda (as have 2 sheets from other regions). 



Found and collected by the writer as follows: 



1. Roadside ditch, between Ellis and Ithaca. 



2* Bills Swamp, In shallow water. 



The species, and presumably the typical form here 

 considered, was found at Renwick Beach, but no specimens 

 are ayailable* 

 Diagnosis and variation: 



5he variety hlsplda is in some cases, at least, 

 very definitely distinct as to pubescence, but decided 

 and constant difference in the shape of the capsules 



