COLORING MATTERS 293 
Fic. 275.—Dyer's Indigo Shrub (Indigofera tinctoria, Pulse Family, Le- 
guminose). Flowering branch; a, flower, enlarged; b, standard (upper- 
most petal), back view; ¢, wing (side petal), inner view; d, e, keel-petal, 
inner and outer views; f, flower with corolla removed; g, pistil. h, fruit, 
natural size; 7, seed; k, same, cut vertically. (Berg and Schmidt.) — 
Shrub growing 2 m. tall; leaves downy beneath; flowers reddish yellow; 
fruit dry. Native home, Southern Asia. 
