1890.] D. Prain — The non-indigenous species of the Andaman Flora. 237 



^'bj introductions. As I directed my full attention to herbaceous 



" plants, I hope that I have noted nearly all the plants growing at my 



" visit in the cleared lands." 



During a brief visit to the Andamans, in November 1889, tlie writer 



made as complete a collection as the time at his disposal would permit 

 of the naturalised species in the settlement at Port Blair, in order to 

 ascertain the number and nature of the species introduced between 1866 

 and 1889. And Dr, King, who paid a short visit to the settlement in 

 April 1890, very kindly collected such weeds as were flowering then, but 

 had not been seen in the previous November. The results of the visits 

 are given below, the plants collected first by Dr. King being indicated 

 by a (K) ; the following method has been adopted in presenting them : — 



1. Cultivated species and weeds — enumerated together by Mr. 

 Kurz — are here dealt with separately. 



2. Species (of both kinds) present in 1866 are taken from the 

 Enumeration by Mr. Kurz referred to above ; for convenience of reference 

 the synonymy of the Report has been made to conform with the nomen- 

 clature in the Flora of British India.^ 



3. Additional species (of both kinds) are those first met with by 

 the writer in 1889, or by Dr. King in 1890. 



It ought to be noted that the list of cultivated species for 1866, as 

 the remarks of Mr. Kurz shew, is not exhaustive. This is equally true 

 of the corresponding list for 1890. It has been felt that an exhaustive 

 list of exotic species could serve no useful purpose ; it is sufficient if 

 attention be directed to such plants, introduced since 1866, as may be 

 reasonably supposed to be capable of becoming in the course of time 

 spontaneous or subspontaneous, and to such plants as possess a direct 

 economic interest. The remarks attributed to Mr. Kurz are in every 

 case taken verbatim from his report ; where necessary the condition of 

 the species in 1889-90 is commented on ; when no second remark occurs 

 the condition of the species is to be understood as having remained ap- 

 parently unchanged during the period between 1866 and 1890. 



* This it has been possible to do with certainty since the original specimens 

 on which Mr. Kurz' Report is based are preserved in the Calcutta Herbarium aud 

 have in every case been re-examined by the writer. 



