





216 



MR. R. A. KOLFE ON THE 



points, which alone might enable one to form some conclusion, 



that are omitted. 



§% 



bello conforme Gatasetum cum parte obconica tenuiore; gyno- 

 stemio elongato mucronatissimo," so that the most obvious dif- 



§ 



form are the shorter 



few-flowered raceme, the more spreading segments, the broader 

 conical portion of the lip, the shorter column, and somewhat 

 different coloration. What the biological significance of these 

 differences may be I cannot conceive, and I can only hope that 

 some Brazilian naturalist, into whose hands this paper may foil, 

 will be good enough to forward to Kew such material as may 

 enable the question to be decided. A dried specimen showing 

 the three kinds of inflorescence described would be invaluable, 

 or even the three kinds if borne on separate plants, though in 

 the latter case there is, perhaps, some danger of two species being 

 confused, as on former occasions. 



I propose to conclude this paper, firstly, by enumerating all 

 the species of Catasetum of which both sexes are known, giving 

 references to descriptions and figures of each sex ; and, secondly, 

 by outlining the principal subdivisions of the genus, indicating 

 the more prominent characters and best known species of each. 

 Many species are yet very imperfectly known, and I should be 

 extremely obliged to any one who will try to remedy this by 

 forwarding to Kew specimens, especially of any instances of the 

 production of the second sexual form of a species. 



I may here point out that in the previous part of this paper 

 the names used by the several authors in question are adopted, 

 but in the following enumeration the earliest unappropriated 

 name of each species is invariably given precedence. Thus Cata- 

 setum tridentatum, Hook., has proved to be the original species 

 upon which the genus was founded, namely G macrocarpum. Rich.; 



f My a nth us 

 Monachanth 



the 



name applies to the females of three distinct species of the genus 



































3 







Enumeration of Species of Catasetum of which both 



Sexes are known. 



1. Catasetum atratum, Lindl. 



Mag 



(1838), Misc 











. 























