BOTANY OF TERRA AUSTRALIS. 35 



in two orders so nearly related as Campanulaceae and Sty- 

 lideae obviously are ; 2ndly. The alleged non-existence of 

 the stigma, which preceding authors had described as ter- 

 minating the column : and lastly, the manifest existence of 

 another part, which, both from its appearance and supposed 

 origin is considered as capable of performing the function of 

 that organ. 



In opposition to these arguments it may be observed, 

 that the real origin of the stamina is in both orders the 

 same, the apparent difference arising simply from their ac- 

 cretion to the female organ in Stylidese, a tendency to 

 which may be said to exist in Lobelia. The inabihty to 

 detect the stigma terminating the column in Stylidiura 

 must have arisen from the imperfection of the speci- 

 mens examined, for in the recent state, in which this organ 

 is even more obvious than in Goodenovige at the time 

 of bursting of the antherae, it could not have escaped so 

 accurate an observer as Richard ; and were it even less 

 manifest in Stylidium, its existence would be sufficiently 

 confirmed from the strict analogy of that genus with Leven- 

 hookia, whose stigma, also terminating the column, consists 

 of two long capillary laciniae, which are in no stage con- 

 cealed by the antherae. 



With respect to the part considered as stigma by Richard 

 I have formerly observed that it is obsolete in some species 

 of Stylidium and entirely wanting in others,^ and there is 

 certainly no trace of anything analogous to it in Forstera. 



The greater part of the Australian Stylidem exist at the 

 western extremity of the principal parallel, several species are 

 found at the eastern extremity of the same parallel, and a few 

 others occur both within the tropic and in Van Diemen's 

 Island. Beyond Terra Australis very few plants of this order 

 have been observed ; two species of Stylidium, very similar to 

 certain intratropical species of New Holland, were found 

 in Ceylon and Malacca, by Koenig ; and of the only two 

 known species of Forstera, one is a native of New Zealand, 

 the other of Terra del Fuego, and the opposite coast of 

 Patagonia. 



' Bauer illusfr. fnh. 5. 



