CABBAGE FAMILY 57 



pretty little plant from 2—5 in. high. Leaves elegantly pinnatifid ; 

 pods elliptic.— Limestone rocks, chiefly in the west of England ; 

 rare. — Fl. March — May. Annual. 



*28. Isatis (Woad).— Tall, erect, branched herbs; cauline 

 leaves sagittate ; flowers yellow ; pods pendulous, indehiscent, 1 - 

 chambered, rounded, compressed, broadly keeled, 1 -seeded. 

 (Name, the Greek name of the genus.) 



1.* /. tinctbria (Woad). — Glabrous, glaucous, 1 — 4 feet high; 

 radical leaves, stalked, oblong ; flowers small, corymbose ; pods on 



hutchInsia petrjea {Rock Hutchinsid). 



lengthening racemes. — Waste places, not indigenous; rare.— Fl. 

 July, August. Biennial. — The ancient Britons stained them- 

 selves with this plant, and it is still grown as a dye. 



29. Crambe (Sea-kale). — Perennial herbs with stems stout, 

 branched ; leaves broad ; flowers white, in compound racemes ; 

 pods indehiscent, 2-jointed, the lower joint seedless, the upper 

 globose, i-seeded. (Name from the Greek, krambe, cabbage.) 



1. C. maritlma (Sea-kale). Glabrous, glaucous ; leaves wavy, 

 toothed, fleshy. This is the plant which is so well known in 

 gardens as a vegetable. The part eaten is the leaf-stalk blanched 



