u 



T>. Prain — Notes on the BoxhurgMaceas. 



[No. 2, 



As regards distribution we find that Stemona exhibits in a very strik- 

 ing fashion the peculiarities characteristic of many of the genera that are 

 confined to the monsoon-region. It is, to begin with, remarkably wide- 

 spread within that area, extending from Malabar and Ceylon to Japan on 

 the one hand, and to the Philippines and the Moluccas on the other. But 

 with the exception of the wide-spread Stemona tuherosa^ which occupies 

 almost the whole of the central portion of this large area, the individual 

 species are much localised. In this instance, no species has so far been 

 actually obtained from the Himalayan region, through the central 

 species, S, tuberosa^ has been collected by Mr. Gr. Mann in the Charduar, 

 near the base of the Eastern Himalaya. The genus SticJioneuron occurs in 

 Khasia and Silhet; and has been gathered again in the Malay Peninsula. 

 The sub-joined tabular statement shows that of the 10 species known, one 

 occurs in Ceylon, two in India, four in Indo-China, one in China, two in 

 Japan, one in the Philippines, two in the Moluccas (Malaya east of the 

 Wallace line), and two in Malaya proper west of the Wallace line. Of the 

 Indian species, one is confined to Malabar and Ceylon and is the only 

 species in these areas. Of the Indo-Chinese form three are endemic ; as 

 are both the Japanese, both the western Malayan, and one of the two 

 Moluccan species. 



Table of distribution of the genera Stemona and Stichoneuron. 



Species. 



o 

 o 





'6 



1 



.9 

 ',3 

 o 



a 



1 



a 



O 



a 



1 



S 



.1 



m 



<x> 



a 

 1 



'o 



1-5 



CQ 



'p 



Remarks. 



Stemona minor ... 

 tuberosa 

 molaccana 

 Knrzii ... 

 japonica... 

 sessilifolia 

 Curtisii ... 

 javanica... 

 Griffithiana 

 Burkillii... 



1 



1 



1* 



... 



^^ 



... 



r 



r 



I 



i" 



1 

 ... 



... 



r 



... 



r 



1 



1 



1 



1* 



1 



i" 



i" 



N Group of 

 / closely 

 y related 

 t forms. 



) -■ 





1 



1 



1 



I 



1 



1 



2 



1 



3 



1 



1 



2 



1 



1 



Stichoneuron raem- 

 branaceum 



... 



... 



... 



1 



... 





... 



... 



... 



... 



... 





... 



1 





