12 



31. Akabis, L. Rock Cress. 



A. hirsuta, Scop. Common in wet places. 



A. laevigata, DC. Not common. Rocky soil. 



A. Canadensis, L. Winooski river, Colchester, Torrey. 



A. perfoliata. Law. Rocky soil. Southern part of the state. 



A. Drummondii, Gray. Peacham, Blanchard ; Snake mountain, 



and common along Lake Champlain, Brainerd. 



32. Barbaeea, R. Br. Winter Cress. 



B. vulgaris, R- Br. Meadows. Rather common. 



B. vulgaris, var. arcuata, Koch. Barnet, Blanchard. 



33. Erysimum, L. 



E. cheiranthoides, L. 



Brattleboro, C. C. Frost. Middlebury, Brainerd. 



34. Sisymbrium, L. Hedge Mustard. 



S. OFFICINALE, Scop. Common. 

 S. Thaliana, Gaud. Less common than the first. 

 S- humile, Meyer. {Arabis petraea. Lam.) Willoughby moun- 

 tain. 



35. Brassica, Tourn. Mustard. 



B. SiNAPISTRUM, Bois. 



Abundant in grain fields about Middlebury, Brainerd. 

 B. NIGRA, Koch. Common on cultivated ground. 

 B. CAMPESTRis, L. Richmond, C. G. Pringle. Abundant about 

 Peacham, Blanchard. 



36. Camelina, Crantz 



0. SATivA, Crantz. Old fields. Common. 



37. Capsella, Vent. Shepard's Purse. 



0- BuESA-PASTORis, Msench. A common weed. 



38. Thlaspi, Tourn. Cress. 



T. arvense. Monkton, Pringle ; Pomfret, A. P. Morgan ; Middle- 

 bury, Brainerd. 



39. Lepidium, L. Pepper Grass 



L. Virginicum, L. Not very common. 



'L. euderale, L. Dry soil. Rutland, Pringle: near lake shore, 

 Burlington. Common in some places. 



40. Raphanus, L. Radish. 

 R. Raphanistrum, L. Old fields ; not common. 



41. ISATIS. 



1. TiNCTOEiA, L. Banks of Winooski river, near Burlington. 



