21G Rhodora [October 



A. glabra (L.) Borah. Fields and dry soil; Boxford, N. Andover, 

 Lowell, Revere, Medford, Hingham, Wellesley. 



A. viridis Harger. See Rhodora xiii. 37-39, 1911. Ledges and 

 rocky hills; Melrose, Middlesex Fells, Woburn, Medford, W. Roxbury, 

 Littleton. 



BARBAREA. 



B. vkkna (Mill.) Aseh. Rubbish heap, Cambridge (M. L. Fernald 

 & C. A. Weatherby, May 26, 1909); Wellesley (K. M. Wiegand, 

 May 29, 1912); moist field, Sharon (C. H. Knowlton, May 19, 1907). 



B. vulgaris R. Br. Wet places, common throughout. 

 B. vulgaris R. Br., var. longisiliquosa Carion. See Rhodora 

 xi. 134-141, 1909. Wet places, frequent. 



BERTEROA. 



B. INCANA (L.) DC. Fields and waste places, occasional. 



B. mutabilis (Vent.) DC. Hingham (7'. T. Boitve, September, 

 1S94); roadside near station, Dedham (E. F. Williams & Sidney 

 Harris, Aug. 22, 1S97); cultivated ground, Walpole, one plant 

 {!{. A. Ware, Aug. 26, 1911). 



BRASSICA. 



B. alba (L.) Boiss. Waste ground, rare. 



B. arvknsis (L.) Ktze. Fields and waste places, common through- 

 out. 



B. (AMl'KSTRls L. Fields, gardens and waste places, common. 



B. japonica Siebold. Ash dump, Stoneham (Miss H. A. Ward, 

 July 1, 1910); Lexington, according to Mabel P. Cook, Rhodora i. 

 81, 1S99. Self-perpetuating in gardens. 



B. Ji'XCEA (L.) Cosson. Fields and waste places, common. 



B. nigra (L.) Koch. Waste places, frequent. 



B. oleracea L. Waste places and gardens, sometimes persistent 

 for a year. 



11 Rapa L. Fields and waste places, Andover, Winchester, Bed- 

 ford, Waltham, Milton. 



