ORGANOGRAPHY. 



Fig. 542. 



Fig. 543. 



Fig. 541. Flower of Orange divested of the corolla, showing polyadelphous 



stamens Fig. 542. The Pistil, n, of a species of Hypericum, surrounded 



by the stamens, e, which are united by their filaments,/, into three bundles. 



. Fig. .143. One of the branched bundles of stamens of the Castor Oil 



Plant (Ricinus commtttiis). 



some species of St, John's Wort (^Hypericum Androscemuni); the 

 term polyadelphous is applied by many botanists, in all cases 

 where there are more than two bundles'^ of stamens. 



The union of the filaments in the above cases, may either take 

 place more or less completely, and thus form a tube of varying 

 heights, as in the Mallow {fig. 537), Oxalis {fig. 538), Hype- 

 ricum, &c, ; or the union may only take place at the base, as in 

 Tamarix {fig. 491), The bundle or bundles, again, may be either 



Fig. 544. 



simple, as in the Mallow, &c. ; or branched, as 

 in Polygala {fig, 503), and Castor Oil Plant 

 {fig. 543). 



When the union takes place so as to form 

 a tube or column, the term androphore has 

 been applied to the body thus formed, as in 

 the Mallow {fig. 537), Oxalis {fig. 538), &c, 



4, Relative Length, — There are two sepa- 

 rate subjects to be treated of here, namely, 1st, 

 the relative length of the stamens with respect 

 to the corolla ; and 2nd, with rcsj)ect to each 

 other. In the first place, when the stamens 

 are shorter than the tube of the corolla so as 

 to be enclosed within it, as in the Forget-me- 

 not {Myosotis) {fig. 496), and in the Peruvian 

 liark ])lant {Cinchona), they arc said to l)e 

 Fig. .'544. Flower of included; wlicn, ou the coutrarv, the stamens 

 M,»'"'!'";„„f.l!"';^l''5 are lon<;er than the tube of tlie corolla so as 



lIiC RiillTiLiiB pro- - ^ ^ iiri' / n 



longed bi-yoiid tiic to cxtoiid bcyoud It, as \\\ the Valerian {fig. 



ore' sntS Thecu- "^"^^^ Plantain, Exostemma, &c., tliey arc 'tx- 



roihi in K'ii)i)()U8 <.r scrtcd ov protruding. 

 saccule at the ba«e. .^^^^^ relative length of the stamens with 



