668 



SCIENTIFIC AND APPLIED PHARMACOGNOSY 



FIG. 294. Flowers of the following Composite: A-H, Inula Helenium; 7, 

 Carthamus tinctorus; J-L, Taraxacum officinale; M, Tussilago Farfara; 

 N, 0, Calendula officinalis; P-S, Tragopogon pratensis; T, Tagetes tenui- 

 folia. 



A, ligulate and tubular florets of Inula Helenium; B, united anthers of 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 epidermis of akene containing prisms of calcium oxalate about 

 0.025 mm. in length; H, pollen grains. /, tubular floret of safflower (Car- 

 thamus tinctorius). J, ligulate floret of dandelion (Taraxacum officinale); 

 K, one of the akenes showing spreading pappus on long stalk which develops 

 after fertilization; L, hairs of corolla. M, ligulate floret of coltsfoot (Tussil- 



