SPERMATOPHYTA. 53 



palustris (L.) Moench., var. hispida (Desv.) Robinson. 



With the preceding. 

 Armoracia (L.) Robinson. Horseradish. 



Escaped from gardens. 



Barbarea R. Br. Winter Cress. 



vulgaris R. Br. Common Winter Cress. 



In fields and waste places. 



Dentaria (Tourn.) L. Pepper-root, 

 diphylla Michx. 



North Brookfield. Miss E. M. Reed. 

 Oardamine (Tourn.) L. Bitter Cress. 



bulbosa (Schreb.) BSP. Spring Cress. 



In wet meadows. 



hirsuta L. In wet places. 



parviflora L. 



Mount Wachusett. W. W. B. and J: F. C. 

 pennsylvanica Muhl. 



Templeton. Mr. P. Blodgett. 

 Arabia L. Rock Cress. 



glabra (L.) Bernh. Tower Mustard. 



Sutton; Worcester. 

 Isevigata (Muhl.) Poir., var. Burkii Porter. 



Boylston. 



canadensis L. Sickle-pod. 

 Sutton. 



CAPPARIDACE^: (CAPER FAMILY). 



Cleome L. 



spinosa L. Spider-flower. 

 Worcester. Mr. George Coult. Waste ground. 



