OP THE PISTILS. 



69 



209 210 



Fiff. 208. Simple pistil of Larkspur. 



Fig. 209. The five simple pistils of Columbine, all distinct. 

 Fig. 210. The three pistils of a St. Johnswort,— ovaries united but styles distinct. 

 Fig. 211. Compound pistil of another St. Johnswort, the three pistils entirely 

 united. 

 Fig. 212. Flax, — the five ovaries united but the styles distinct. 

 Fig. 218. Pink,— the two ovaries united, styles distinct. 

 Fig. 214. Saxifrage, — the two pistils slightly united. 



together, forming a monopetalous corolla, so the pistils may- 

 combine into a cowpownd pisUl. The parts of such a pistil 

 are conveniently called carpels. 



125. As to the extent of this union of the pistils, it is found 

 in all possible degrees, always beginning at base and pro- 

 ceeding upwards. For example, in Columbine (Fig. 209), 

 the five carpels (pistils) are entirely distinct ; in Early Saxi- 

 frage (Fig. 214), the two carpels are -united at the base; in 

 Pink (Fig. 213), the two unite to the top of the ovary, leav- 

 ing the styles distinct ; so also in Flax (Fig. 212) ; in Even- 

 ing Primrose, the four pistils cohere to the top of the style, 

 leaving the stigmas distinct ; and finally, in the Lily, the 

 three carpels are united throughout. . (See Figs. 209-214.) 



126. We may know the number of carpels in a compound 



125. As to the cohesion or union of pistils, — how is it in Columbine ? in 

 Pink ? iiii. Early Saxifrage ? Evening Primrose ? Lily ? 



