POLLINA TION—FER TILIZA TION. 



131 



tion. The same species of the Primrose (Fig. 5; i) shows two forms, 

 and is therefore called Dimorplwus ; 

 one form (Fig. 5, i) has .a short 

 style with the stamens inserted on 

 the corolla -throat above it; the 

 other has a long style with the 

 stamens inserted on the corolla- 

 tube below it. These forms are 

 evidently contrived for the visits 

 of insects. The Yellow Jessamine 

 (Gelsominum) is dimorphous ; the 

 Loose-Strife is Trimorphous. 



300. Modes of Fordgn 

 Pollination. — Flowers polli- 

 nated by the wind are termed 

 Anemophilous, or wind-lov- 

 ing (Gr. anemos, wind ; phi- 

 los, loving). The Pines, 

 Grasses, Poplars, and Birches 

 are examples. Their stig- 

 mas are usually feathered, to 

 catch the pollen readily (Figs. 

 61, 52); their pollen-grains 

 are dry and smooth (Fig. 4, 6 ; Fig. 47, A, B). Anemo- 

 philous flowers are never conspicuous; they are usually 

 diclinous, and the male flowers produce great quantities of 

 pollen. 



301. EntomopMlous, or insect-loving flowers (Gr. cn- 

 tomos, insect), are pollinated by insects. These flowers are 

 much more interesting and varied ; they use every device to 



Fig. \^^.—Ariskitochia Serpeniarin : a, 

 flower ; b, same cut open, showing sta- 

 mens and stigma, c ; d, stamens ; c, stig- 

 ma-lobes. 



Fig. 187. — Fis. of Sage {Baloia officinalis). 

 flower. A, pistil ripe, ready for pollen. 



B, stamens ripe, bee entering 



allure insects. The bee, the moth, and the butterfly are the 



