690 434.. Coronopus. 80. CRUCIFER.gE. PI ex. thai, 

 b. Senebiera. Silicula nicked. 



2. Coronopus didyma. Twin s-wine's-cress. 



SiUmlcB nicked, twin, reticulately wrinkled ; style very 

 small ; corymhiis many-flowered. 



Lepidium didymum, Lin. Mant. 92. 



Lepidium Aiiglicum, Hudson Ft. Angl. 2S0. 



Coronopus didymum, Smith Fl. Brit. 691. 



Senebiera pinnatiiida, De Candolle Fl. Franc. 4238. 



Senebiera didym<^, Persoon Syn. 2, 185. 



Lepidium prostratum, Savi. 



Nasturtiolum pennatum, Mcench Meth, Suppl, 71. 



Walls; annual; July. 



S^em trailing, hairy; Zeayei pinnatifid; corymb us lateral, 

 becoming a long raceme; stamens 2 or 4, rarely more. 



F. SilicitlcE short, slightly 2-valved, 1-celled; cells l-seeded. 



XVIII. 435. ISATIS. Dioscorides. Woad. 

 SiliculcE 1-celled, 1 -seeded; valves boatshape, tardy in 



opening; filaments toothless, distinct. 



Isatis tinctoria. Dyeing ivoad. 



Siliculce reverse-ovate, oblong, bald; stem-leaves arrow- 

 shape, bald. 



Glastum sativum, Raii Syn. 307 ; Ger. em. 491 ; Park. 600. 

 Isatis tinctoria, Lin. S, P. 936. 

 Woad. Wade. 



Corn-fields, also cultivated ; biennial ; July. 



Stem bald : leaves glaucous ; root-leaves lanceolate ; 

 Jlowers panicled, terminal; sepales and pe/fl/>y yellow ; sili- 

 culce pendulous, shining. — Herb manufactured into a blue 

 pigment, by being ground, made into balls, dried upon 

 hurdles, then ground again, watered, left to heat, until per- 

 fectly dry and mouldy. In Hungary it has been manu- 

 factured so as to be equal to indigo, but then it was as ex- 

 pensive. Our female ancestors painted their bodies with it 

 in order to attend their religious ceremonies. 



G. Siliculce 2-valved ; 2-celled. 



XIX. 436. VELLA. Galen. Cresset. 

 Siliculce bellied; style leaflike, ovate; cotyledons con^n" 



plicate ; calyx closed. 



