MUSTARD FAMILY 103 



pinnately cut toward the base, obtuse ; stem leaves oblong or lanceo- 

 late, entire or somewhat toothed, with an arrow-shaped clasping 

 base. Flowers white or yellowish, on stout pedicels. Pods ovate, 

 winged, slightly notched, tipped with a very small persistent style. 

 Fields and waste ground, becoming a troublesome weed. Naturalized 

 from Europe. 



V. CAPSELLA Medic. (BURSA) 



Annual. Stem erect, downy, -with branched hairs. Eacemes 

 terminal, becoming elongated in fruit. Flowers small, white. 

 Pod obcordate or triangular, flattened contrary to the parti- 

 tion, shorter than the spreading pedicels.* 



1. C. Bursa-pastoris Medic. Shepherd's Pt-rse. Root long and 

 straight. Stem branching above, downy below, smooth above. 

 Lower leaves forming a rosette at the base of the stem, irregularly 

 lobed or pinnately cut ; stem leaves lanceolate, clasping, toothed or 

 entire. Sepals downy, about | as long as the petals. Pod triangular, 

 notched, or cordate at the apex. Seeds several in each cell. A com- 

 mon weed.* 



VI. RAPHANUS L. 



Annual or biennial herbs. Basal leaves lyrate. Mowers in 

 long racemes, white or yellow, purple-veined. Sepals erect. 

 Pods rather long, slender-beaked, not splitting open but some- 

 times breaking across into 1-seeded joints. 



1. R. Raphanistrum L. Wild Radish, Jointed Ch.a.rlock. A 

 stout, hairy annual, 1-2 ft. high. Leaves cut into remote segments, 

 which are coarsely toothed or serrate ; terminal segment largest. 

 Flowers yellow, turning whitish or purplish. Pods necklace-shaped, 

 and with a long beak. A common weed eastward. Naturalized from 

 Europe. 



2. R. sativus L. Com.mox R.\dish. Similar to No. 1, but with 

 pink or white flowers. Root fleshy, conical or turnip-shaped. Pod 

 fleshy, 2-3-seeded, the beak often longer than the seed-bearing portion. 

 Cultivated from Asia and occasionally self-sown in cultivated ground. 



VII. BRASSICA L. 



Branching herbs. Leaves often pinnately cut. Mowers in 

 racemes, rather large, yellow. Sepals spreading. Pods nearly 

 cylindrical, sometimes tipped with a beak- which does not 

 open. Seeds globular. 



