122 



THE FLOWKIi 



posterior openings, or exits (r). As it emerges through 

 this ratlier narrow portal, it brushes against one of the 

 pollen masses (p), which adheres to its head or shoulder. 

 In the next flower visited, the bee in leaving encounters 

 the stigma (s), and leaves on the surface somi^ of the pollen 

 lirought fr(im the former fldwer. Finally succeeding iu 

 crawling past this obstacle, it brushes a pollen mass from 

 this flower, to be carried to the next ; and so passes about, 

 ahva3's taking away pollen, but not depositing it upon 

 tlie stigma of the same flower. 



240. Sage (Salvia, Fig. IGSI^^ — Tlie corolla is two- 

 lipped, as nearly always in the iMiut family, the lower lip 

 serving as a convenient lauding stage for insects, while the 

 u[)per, erect and arched, incloses the two anthers (a). The 



fl( ) wer is pre )terandrous, 

 and at the period rep- 

 resented in the figure 

 the stigma is seen i>vo- 

 truding from the upper 

 lip, its two branches 

 folded togetlier. The 

 stamens are inserted 

 on the sides of the 

 narrow throat and 

 are hinged near the 

 point of insertion. 

 Each bears a projec- 



B 



1(19. Meclmnism of the flower of S.alvi.i; a, 

 pr>llen sacs of the anthers, hidden 

 nnder the upper lip of tlie corolla ; (f' , 

 their ]josition when dustincr the hack 

 or 'sitles of a hee ; c, lohes against 

 which the bee pushes in thrusting its tioil (c) standing OUt 

 head into the thro.at of the corolla; ^^^^^ ^.^^.^^ blocking 

 s, stigma, imniatLire: -'.■ , stigma when i j o 



mature. In .1 the stamens are seen, tlie throat. When a 

 removed from the corolla; /' filaiueut i i -j- i i 



on which the anther turns. ^66 pushes itS head 



into the corolla tube, 

 these projections are jjushed back, ;ind the whole upper 

 parts of the stamens are rotated on the hinges. The 

 pollen sacs, heretofore concealed under the hood, are 



I From MUller's " Fertilization of Flowers," by courtesy of the Macmil- 

 laii Company, publishers, New York. The book is a valuable reference 

 work. 



