SECTION 12.] 



THE RECEPTACLE. 



113 



Goldthread. Then it is technically distinguished as a Thecapho-re. When 

 there is a stalk, or lengthened internode of receptacle, directly under a 

 compound pistil, as in Stanleya and some other Cruciferse, it is called a 

 Gynophore. When the stalk is developed below the stamens, as in most 

 species of Silene (Fig. 356), it has been called an Anthophore or Gono- 

 fhore. In Fig. 357 the torus is dilated above the calyx where it bears 

 the petals, then there is a long internode (gonophore) between it and the 

 stamens ; then a shorter one (gynophore) between these and the pistil. 



324. A Carpophore is a prolongation of receptacle or axis between the 

 carpels and bearing them. Umbelliferous plants and Geranium (Fig. 358, 

 359) afford characteristic examples. 



325. Flowers with very numerous simple pistils generally have the re- 

 ceptacle enlarged so as to give them room ; sometimes becoming broad and 

 flat, as in the Flowering Raspberry, sometimes elongated, as in the Black- 



360 361 362 



berry, the Magnolia, etc. It is the receptacle in the Strawberry (Fig. 360), 

 much enlarged and pulpy when ripe, which forms the eatable part of the 

 fruit, and bears the small seed-like pistils on its surface. In the Rose 

 (Fig. 361), instead of being convex or conical, the receptacle is deeply 

 concave, or urn-shaped. Indeed, a Rose-hip may be likened to a straw- 

 berry turned inside out, like the finger of a glove reversed, 

 and the whole covered by the adherent tube of the calyx. 

 The calyx remains beneath in the strawberry. 



326. In Nelumbium, of the Water-Lily family, the singu- 

 lar and greatly enlarged receptacle is shaped like a top, and 

 bears the small pistils immersed in separate cavities of its flat 

 upper surface (Fig. 362). 



327. A Disk is an enlarged low receptacle or an out- 

 growth from it, hypogynous when underneath the pistil, as in 

 Rue and the Orange (Fig. 363), and perigytwus when adnate 

 to calyx-tube (as in Buckthorn, Fig. 364, 365), and Cherry (Fig. 271), or 



Fig. 360. Longitudinal section of a young strawberry, enlarged. 



Fig. 361. Similar section of a young Rose-hip. 



Fig. 362. Enlarged and top-shaped receptacle of Nelumbium, at maturity. 



Fig. 363. Hypogynous disk in Orange. 



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