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Flora of Narcondam and Barren Island. 
tlie Narcondam, 59°/o of tlie Barren Island flora—are common to the 
two islands. Of the genera, 111 occur in Narcondam and 75 in Barren 
Island, but only 48,—43|-% of the Narcondam ones, 64'’/o of those in 
Barren Island—are found in both places. Eleven natural orders present 
in Narcondam are unrepresented in Barren Island; five present in 
Barren Island are not found in Narcondam. 
As regards Cryptogams, the two floras seem very similar, each 
having the same total number; the natural orders, however, indicate 
greater diversity of character among Barren Island than among Narcon¬ 
dam Cryptogams. There are two Lycopodinece, and two Algce, not re¬ 
presented in Narcondam ; on the other hand, in Narcondam, at the top 
of the hill are a Trichonianes and a Neckera, absent from Barren Island. 
Of the thirteen ferns on Narcondam and 12 on Barren Island, 5 only are 
common to the two places ; the Narcondam ferns belong to 6 genera, the 
Barren Island ones represent 8 genera. In Narcondam, one of the 
features of the vegetation is the presence of large beds of ferns; in 
Barren Island, ferns are scarce. 
All the Cryptogams are herbaceous, and may all have their presence 
credited to wind-agency; Acrostic-hum aureum, however, in both islands, 
and dcrostichum scandens in Barren Island, grow only near the sea ; both 
are denizens of mud-flats in the Sunderbuns, the Andamans and through¬ 
out Malaya and possibly therefore are sea-introduced. 
Of the 46 natural orders of Phanerogams in Narcondam, 23 are re¬ 
presented by one species, 12 by two species, 3 by three species, and .3 
by four species each ; the only orders represented by more than four 
species, are Compositce and Convolvulacece, each 6 sp. ; Euphorhiacece, 10 
sp. ; Leguminosoe, 12 sp. and UtricacecB, 13 sp. In the 35 natural orders 
in Barren Island we find that 21 are represented by one species, 8 by 
two species, and 2 by three species ; the only orders represented by 
more than three species are Leguminosoe, Bubiacece and EupTiorhiaceat, 
5 sp. each, and Urticacece, 7 sp. Urticacece is thus in both islands the 
leading natural order ; this hegemony is due to the facilities that fruits 
of the order offer for introduction by frugivorous birds. 
Of the 115 Narcondam Phanerogams, 33 are trees, 31 are shrubs, 
37 are climbing species—woody climbers 16, herbaceous climbers 21 ; 
only 5 climbers being armed—and 14 are herbs. Of the 65 Barren 
Island species, 15 are trees, 17 are shrubs, 16 are climbers—woody 6, 
herbaceous 10; only 3 armed—and 17 are kerbs. There are roughly 
speaking twice as many trees, shrubs and climbers in Narcondam as 
in Barren Island; the number of herbaceous species in the latter island 
is, however, slightly in excess of the nnmber in the former. Of the 
herbaceous Phanerogams seven species are common to both islands ; all 
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