— 137 



REMA BK8. 



The " HerDe Caille " was introdaced into Mau- 

 ritius about 1840 from Mexico aud was grown as a 

 flower at the Botanical Garden, Pamplemousses. From 

 there it has spread to Rodrigues and Bourbon as well 

 as to Flat Island. 



Mr. Baker, in his Flora of Mauritius and Sey- 

 chelles, names six varieties of this species, Macrodon 

 is the name he gives to the variety that grows to Flat 

 Island. In Flat Island, I have seen five or six forms 

 growing on the same plant, and had each form been 

 conhned to one plant, and had each different varieties 

 if not species. Mr: Baker says that a,ll the specimens 

 of Psiadia trinerva at Kew herbarium are from 

 gardens ; but all the samples of this plant grown in 

 gardens in Mauritius, were originally from wild plants 

 that were found on Flat Island. I have taken gla- 

 brous, glutinous, pilose forms, &o., having oblanceo- 

 late, obtuse, entire and oblong lanceolate, acute, 

 inciso-dentate leaves off one plant. 



Herbe Blanche, like the Herbe Caille, was 

 introduced from tropical America to Mauritius,whence 

 it has spread to Flat Island,Kodrigues and Bourbon &c. 



This species is said to grow in waste lands in 

 Mauritius^ that may be, but I do not recollect of 

 seeing it on the main land. It is common on Flat 

 Island, where it appears to have been first gathered 

 by Dr Ayres. It is said to bo a cosmopolitan weed. 



This cosmopolitan weed is found in great abun- 

 dance on Flat Island as well as on the mainland &c.' 



This trailing stemed plant, which has a root like 

 a carrot in shape, grows in tufts among the coral sand 

 round the shore. It is common to the mainland, Asia, 

 Madagascar, Bourbon and eastern Africa. 



