MBDDLBSBX FLORA. 



"Lower leaves runcinateTpinnatifid, lacinise dentate with aurieulate 

 base, auricle ascending ; upper leaves pinnate, pinnae all narrowly 

 linear ; sepals widely spreading ; pods and pedicels of about equal 

 diameter, spreading." 



Koch, Syn. Flor. Germ. 



S. Loeselii, L. 



Westford, woollen-mill yard, 1884 and 1885 CDr. C. W. Swan). 

 July-Aug. Adv. from Eu. 

 "Stem 1-3 ft. high, hispid with stiff hairs, as are also the lower leaves. 

 Leaves runcinate-pinnatifld, the terminal segment very large, has- 

 tate ; calyx patent ; pods ascending, twice the length of the spread- 

 ing pedicels, the younger shorter than the convex cluster." 



Wagner, Deutsche Flora. 

 S. incisum, Engelm. 



N. Chelmsford, in wool-waste (Rev. W. P. Alcott ; specimen in 

 herb. of). Adv. from Cal. 



BeaSSICA, Tourn. 



B. SINAPISTRUM, BoiSS. CHARLOCK. YELLOW MUSTAED. 



Westford, Medford, Ashland, et al. Eather common in waste 

 grounds. June-Aug. Nat. from Eu. 



B. ALBA, Gray. White Mustaed. 



Groton and Dracut, waste-heaps (Dr. C. W. Swan) ; Somerville 

 (C. E. Perkins). June-July. Nat. from Eu. 



B. NIGRA, Koch. Black Mustard. 

 Persistent about dwellings as a relic of cultivation. Rather com- 

 mon. June-Aug. Nat. from Eu. 



B. campestris, L. Kale. 

 Persistent in old gardens, and common on "dumps." June-July. 

 Int. from Eu. The cultivated forms of JB. campestris, B. Rapa, L. 

 Turnip, and B. Napus, L. Rape, are often persistent. For de- 

 scription, see Wood's Bot. & Fl. 



Deaba, L. 

 *D. arabisans, Michx. 



Concord ; introduced from Vermont by Minot Pratt. May-June. 

 D, Caroliniana, Walt. 



Wobum (C. B. Perkins). Precise locality now unknown. May. 

 D. verna, L. Whitlow Grass. 



West Medford (Wm. Boott) . This rare plant has appeared every 



spring for many years in the gravelly paths of a garden. No other 



locality is known. Apr.-May. 



Altssum, Tourn. 

 A. ealycinum, L. 



Medford (G. E. Davenport); Somerville (C.E.Perkins). May. 

 Adv. from Eu. 



