250 



ME. W. T. T. DYEB ON THE GENUS HOODIA.. 



Carallwma subulata (Ann, des Sc. Nat. 2 e ser. ix. tab. 9 D) as 

 having a corona which is certainly double ; and in descri- 



rangee 



bing his analyses (p. 346) he uses the expressions ' 

 externe" and "rangSe interne" which can hardly be properly ap- 

 plicable to a corona simplex. In point of fact if the external 

 series of coronal organs in Caralluma were connate, we should 

 have a structure essentially similar to that found in Decabelone. 

 The individual segments are three-lobed, with the middle lobe 

 very short. In Decabelone elegans the external coronal whorl is 

 composed of five deeply bifid connate segments ; and in D. JBarMyi 

 there is a minute third lobe at the bottom of the cleft. 



By the kindness of Dr. Masters, E.R.S., I am enabled to repro- 

 duce from the ' Gardeners' Chronicle ' a woodcut which appeared 

 in the volume for 1873 (p. 576), and which represents a mass of 

 Hoodia Gordoni in full flower. It was copied from a photograph 



Hoodia Gordoni. 





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h 



