102 NEW YORK STATE MUSEUM 



Dentaria laciniata Muhl. 



Gut-leaved toothwort 



Moist soil in rich woods, specially along the river. Common. 



May. 



Dentaria diphylla Michx. 



Tico-leaved tootJitvort 



Rich woods and along small streams. Frequent. May. 



Bursa bursa-pastoris (L.) Britton 

 Oapsella burs a-p a s t o r i s Medic 

 Shepherd's purse 

 Fields and waste places. Abundant. March- January. Fre- 

 quently used as a pot herb. 



Arabis lyrata L. 

 Lyre-leaved rock cress 

 Along the river at Apalachin, growing on stony banks, upturned 

 roots of trees and even on their trunks. Infrequent. May- August. 



Arabis dentata T. & G. 

 Toothed rock cress 

 River shores. Infrequent. Barton. May- June. 



Arabis hirsuta (L.) Scop. 

 Hairy rock cress 

 Thickets in stony soil. Infrequent. Apalachin and Campvllle. 

 May-August. 



Arabis laevigata (Muhl.) Poir. 



Smooth rock cress 

 River banks. Frequent. May. 



Arabis canadensis L. 



Sickle pod 



Woods and thickets, specially those along the river. Common. 



June-August. 



Arabis glabra (L.) Bernh. 



A. perfoliata Lam. 

 Toioer mustard 

 Stony soil in a thicket near Apalachin. Infrequent. May- 

 August. 



