y EG ETA riVE REPKOV UCTION. 



257 



Fig. 2S0, — Inflorescence of the dog^'ood {Comiis Jiarida), showing; four wliite bracts 

 below it, ginng ttie whole cluster the aspect of a single flower. Twu thirds natural 

 size. — After Kaillon. 



Fir.. 2S1. — Inflorescence of yarrow {Achillea i:!in€/oliu)u). A. seen from nbo\"e : B, 

 in longitudinal section. /, bracts, forming tlie involucre ; d, bracts in whose axils the 

 flowers stand; rti, the ray flowers; /'/, the disk flowers; c, corolla ; y, o\"u)ary ; ??, 

 stigmas ; /', the common torus. A magnified about S diam. ; B, about 15 diam — After 

 Pr^iitl. 



