BRASSICACEAE. 



151 



2. Brassica integrifolia (West) O. E. 

 Schulz. WILD MUSTARD. (Fig. 175.) An- 

 nual, pale green, glabrous, or very sparsely 

 pubescent below, branched, l-3 tall. 

 Lower and basal leaves obovate, petioled, 

 6'-l long, coarsely dentate, the upper 

 much smaller, oblong to linear, mostly 

 entire; racemes loosely many-flowered; 

 petals light yellow, 3"-4" long; fruiting 

 pedicels ascending, 2"-6" long; siliques 

 linear, torulose, l'-li' long, slender-beaked. 



Roadsides and cultivated grounds. Nat- 

 uralized. West Indies and continental tropical 

 America. Native of southeastern Asia. 



Brassica campestris L., TURNIP, and 

 Brassica cleracea L., CABBAGE, are exten- 

 sively grown as garden vegetables ; KALE, a 

 variety of Cabbage not forming heads, is 

 occasionally grown. Both are natives of 

 Europe. 



8. SINAPIS L. 



Annual or biennial, usually erect, branching more or less hispid herbs, with 

 pinnatifid or lobed leaves, and rather large, mostly yellow flowers in terminal 

 racemes. Siliques linear, nearly terete, constricted between the seeds, sessile in 

 the calyx, tipped with a flat sword-like beak which sometimes contains a seed 



near its base, its valves 3-5- 

 nerved. Seeds oblong or sub- 

 globose, not winged nor mar- 

 gined. Cotyledons condupli- 

 cate. [Name Greek, said to 

 come from the Celtic for tur- 

 nip.] About 5 species, natives 

 of southern Europe. Type 

 species: Sinapis alba L. 



1. Sinapis arvensis L. 



CHARLOCK. WILD MUSTARD. 

 (Fig. 176.) Erect, 1-2A 

 high, hispid with scattered stiff 

 hairs, or glabrate. Leaves sim- 

 ilar to those of Brassica nigra 

 but generally not so much pin- 

 natifid ; flowers 5"-8" broad; 

 pedicels stout ; pods glabrous, 

 spreading or ascending, some- 

 what constricted between the 

 seeds, 5 "-8" long, 1" wide, 

 tipped with a flattened elon- 

 gated-conic often 1 -seeded beak 

 5"-6" long, the valves strongly 

 nerved. [Brassica Sinapistrum 

 Boiss.] 



Waste and cultivated grounds. Naturalized. Native of the Old World. Flow- 

 ers in spring, occasionally later. 



