88 RHIZOGENS. 



action of the pollen on their styles. "Indeed," he observes, "in the 

 development of the female organ, in the continuous surface of the style 

 before fecundation, and in its obvious perforation after, Balanophora presents 

 a direct affinity to a group of plants with which otherwise it has not a 

 single analogy." In another genus, called Phseocordyhs, he finds that the 

 hairs in which the fruits are imbedded present a remarkable analogy with 

 the paraphyses of Drepanophyllum and certain Neckerae, and also with the 

 bodies which he suspects to be the male organs of Ferns. Surely this is a 

 class of peculiarities which indicate a group of a much lower rank than that 

 of Exogens or Endogens. It is easy, indeed, to get rid of many of these 

 characteristics by a particular mode of reasoning ; but, since the same 

 mode of reasoning would equally destroy every class now recognised among 

 plants, I do not think it necessary to examine it particidarly. 



There is an account of Rhizogens by Endlicher in his Meletematay which 

 contains a summary of all that was in 1832 known concerning them. 

 For further information the reader is referred, to Blume's Flora JavcB ; 

 Martins' iYcit*« Genera, &c., vol. 3 ; Brown's Observations on Rafflesia, in 

 the 13th and 19th volumes of the Lmnean Societi/'s Tratisaciions ; Griffith, 

 in the Proceedings of the same learned body, and the various works quoted 

 at the head of the following natural orders : 



Natural Orders of Rhizogens. 



Ovules solitary, pendulous ; fruit one- seeded 2G. Balanophorace^. 



Ovides 00, parietal; fruit many-seeded ; calyor, 3-i-6-parted ;\ ey- p.^.^^^, ,^^^ 



-7 • T 7 'j ' r - ' • v/iTI>ACE^. 



anthers opening by skts J 



Orules 00, parietal ; fruit many-seeded, calyx 5-parted, anthers \cyr, j^ 

 opening hy pores J "" " 



