390 



BOTANY AND PHARMACOGNOSY. 



Fig. i8i. Flowers of the Compositae: A, ligulate and tubular florets of Inula Helcnium ; 

 B, united anthersof same showing hairs (h) on the filaments; C, hairs of filaments magnified; 

 D, portion of barbed hair of pappus; E, akene; F, double hairs of akene; G. cells of epi- 

 dermis of akene containing prisms of calcium oxalate about 25 n long; H, pollen grains in 

 different views. I, tubular floret of safflower (Carthamus linctorius) . J, ligulate floret of 

 dandelion (Taraxacum officinale): K. one of the akenes showing spreading pappus on long 

 stalk which developes after fertilization; L, hairs of corolla. M, ligulate floret of coltsfoot 

 (Tussilago Farfara). N. ligulate floret of marigold (Calendula officinalis); O, one of the 

 hairs of corolla. P. pappus of yellow goat's-beard (Tragopogon pratensis) ; R. one of the 

 long slender hairs in the pappus; S, hair from akene. T. two double hairs from akene of 

 Tagetes tennifoha. c, corolla; t, stigma; s, stamens; p, pappus. 



