is throughout strongly constricted, as if jointed, at short intervals, and thus 

 divided into well-marked nodes and internodes. The internodes are gene- 

 rally shorter than their breadth, but sometimes longer and shorter alternate 

 with each other. Every second internode, or sometimes every internode, 

 bears a pair of opposite, obovoid-oblong, very obtuse pinnae, |-f inch long 

 and 2-3 lines wide, terete and bag-like when recent, compressed when dry. 

 Substance horny. Colour a brilliant grass-green, becoming olivaceous in age 

 and in drying. 



In the distribution of my Australian duplicates I have referred 

 this species to C. corynephora, Mont., and, I think, correctly ; for 

 though the figure given by Dr. Montagne represents a smaller 

 and rather more slender specimen than the one here chosen for 

 illustration, it differs in no essential character ; and some of my 

 Australian specimens are equally small and narrow. My re- 

 ference to the earlier C. cactoides of Brown and Turner is open 

 to graver objections, and yet I cannot persuade myself that the 

 plant now figured is not identical with what they had in view ; 

 for our plant abounds along the whole coast visited by Dr. 

 Brown, and could not well have escaped his notice, whereas no 

 specimen quite agreeing with Turner's figure and description 

 has been found by recent Collectors who have carefully explored 

 the Australian shores. I suppose therefore that Turner had be- 

 fore him a badly dried and possibly a distorted specimen, and 

 was thus led to figure and describe the ramenta as " imbricated 

 on all sides," and not strictly distichous, as they invariably are 

 on all the many specimens I have examined. In all other re- 

 spects our plant sufficiently agrees with Turner's description, 

 and the name cactoides is quite expressive of its succulent and 

 robust characters. 



Fig. 1. Cauleupa cactoides, — the natural size. 



