DIV. II 



ANGIOSPERMAE 



711 



Family 4. Compositae. Distributed over the whole earth. For 

 the most part herbs of very various habit ; some tropical forms are 

 shrubs or trees, e.g. Senecio Johnstoni. The flowers are associated in 



FIG. 775. Floral diagram of Campanula 

 medium. (After EICHLER.) 



FIG. 776. Campanula rotundifolia. a, Flower; 

 6, the same cut through longitudinally. 

 (Xat. size.) (After H. SCHEXCK.) 



FIG. 777. Floral diagram of Lobelia 

 fulgens. (After EICHLER.) 



FIG. 778. Lobelia inflata. Upper por- 

 tion of plant with flowers and fruits. 



heads. The single flowers are actinomorphic or zygomorphic. Stamens 

 five ; anthers introrse, cohering by their cuticles to form a tube 

 (Fig. 779) which is closed below by the unexpanded stigma. The 

 pollen is shed into the tube formed by the anthers and is swept out 

 by the brush-like hairs of the style as the latter elongates. The 



2 zi 



