253 
Names of Species. 
Remarks, 
110 Ischsemnm rngosnm Nees. 
I. ciliare Retz. 
Anthistiria scandens Roxb. 
Chloris barbata Sw. 
Eragrosfcis unioloides Nees. 
Aberdeen, 
Aberdeen, ratber common. 
Aberdeen, very common. 
Rosa Island and Aberdeen. 
Very common on Ross Island, not seen at 
Aberdeen. 
115 f Selaginella proniflora Bale. 
w 1 
s 
cS 1 
Cheilanthes tennifofia Siiv. 
I Ceratopteris tbalictroides 
^ 1 Brogn. 
^ 1 
Very plentiful everywhere on Ross, but not 
present either at Aberdeen, Hopetown or 
Viper. 
On gravelly roadsides at Aberdeen, ■ 
In ponds at Aberdeen ; possibly introduced by 
water-birds ; (see note on Monochoria vagin¬ 
alis.) 1 
Comparing the state of affairs in 1866 with that prevailing in 1890 
we find that at the former date there were present in the Andamans 61 
weeds of cultivation of which 68 were again met with, either in Novem¬ 
ber 1889 or in April 1890. But too great weight should not be placed 
on the absence of any plant, since it is quite possible that in visits of 
such short duration as those of the writer and Dr. King species that 
are not very common might easily be oveidooked. 
In November 1889 and in April 1890, on the other hand, we find 
that not only were 58, or 95 %, of the weeds of 1866, present, but that 56 
others had found their way into the settlement during the interval be¬ 
tween 1866 and 1890. 
Briefly reviewed the results indicated by these four lists are :— 
1. That in 1866 15 intentionally introduced plants and 61 weeds 
of cultivation had apparently or actually become so established in the 
Andamans that, . though not indigenous plants, they had become an 
integral portion of the Andamans flora. 
2. That by 1890 14 more of the plants intentionally introduced 
prior to, but only seen under cultivation in, 1866 had become similarly 
naturalised; that along with these 9 species, intentionally introduced 
during the interval between 1866 and 1890, had begun to appear spon¬ 
taneously ; also, that during the same interval 56 more weeds had been 
introduced. 
3. That, on the other hand, a species appearing spontaneously in 
1866 was only seen cultivated in 1890, and that three of the 1866 weeds 
were not met with in 1889 or 1890. 
The subjoined table exhibits the intrusion of the non-indigenous 
element at present existing in the flora of the Andamans. 
43 
