112 



THE RECEPTACLE. 



[SECTION 12. 



orifice is at the base, by the side of the hilum or place of attachment. The 

 aduate portion of the fuuiculus, which appears as a ridge or cord extending 

 from the hilum to the chalaza, and which distinguishes this kind of ovule, 

 is called the RHAPHE. The amphitropous ovule (Fig. 346) has a short or 

 incomplete rhaphe. 



322. Fig, 348-352 show the stages through which an ovule becomes 

 anatropous in the course of its growth. The annexed two figures are sec- 

 tions of such an ovule at maturity ; and Fig. 355 is Fig. 353 enlarged, 

 with the parts lettered. 



SECTION XII. MODIFICATIONS OF THE RECEPTACLE. 



323. The Torus or Receptacle of the flower (237, Fig. 223) is the por- 

 tion which belongs to the stem or axis. In all preceding illustrations it is 

 small and short. But it sometimes lengthens, sometimes thickens or vari- 

 ously enlarges, and takes on various forms. Some of these have received 

 special names, very few of which are in common use. A lengthened por- 

 tion of the receptacle is called 



A STIPE. This name, which means simply a trunk or stalk, is used in 



8CT 



botany for various stalks, even for the leaf-stalk in Ferns. It is also applied 

 to the stalk or petiole of a carpel, in the rare cases when there is any, as in 



FIG. 356. Longitudinal section of flower of Silene Pennsylvania, showing stipe 

 between calyx and corolla. 



FIG. 357. Flower of a Cleome of the section Gynandropsis, showing broadened 

 receptacle to bear petals, lengthened stipe below the stamens, and another between 

 these and pistil. 



FIG. 358. Pistil of Geranium or Cranesbill. 



FIG. 359. The same, ripe, with the five carpels splitting away from the long 

 beak (carpophore), and hanging from its top by their recurving styles. 



