Tate—Ox the Floras of Norfolk and Lord Howe Islands. 213 
ViII—Sprctzs or Lorp Hower anp Norrotk Isnanps IN RESPECT OF THEIR 
GEOGRAPHICAL DisTRIBUTION. 
The following table summarises the aftinities of the species in their geographical 
relationships, the details of which are given in the appended List of Species arranged 
according to their geographical distribution. 
Regional Distribution. Howe. Norfolk. | Common to both. 
I. Extra-Australian— 
Hndemil Chae scsteacrecssseeeeesets 56 6 2 5 
Eixtra-limitalyeaesceaecestenecce 9 1 4 
DierAustrallasianceesescerceeneescctete 49 aoe 23 Ree 15 
III. Oriental and Cosmopolitan.. ..... 59 5c 8 oe 7 
IV. Australian — 
Extra-Australian genera..... 26 200 5 On0 2 
Australian genera.......... nc 8 1 
Mortal seastesemcteseices . 207 o0c 90 500 34 
VIII.—Sprcres or Prants 1x Norrork Isianp. 
Of the total of 90 species 37 are common to Australia and Norfolk Island, 
leaving 53, or 59 per cent., which are absent from continental Australia. Of the 
eleven extra-Australian species not endemic, nine occur in New Zealand (three of 
which extend to Polynesia); the others are common to Polynesia and Norfolk Island. 
Of the continental species, five belong to cosmopolitan or Oriental genera, whilst 
the sixth, Lagunaria Patersont, as remarked under the generic heading, may be 
regarded as having originated in either area. Aymenanthera Banksit, ¥.v.M., is a 
collective species including 7. dentata, R.Br., 1. angustifolia, R.Br., and 17. latifolia, 
Endlicher ; but Bentham considers the last distinct from the former two and from 
the New Zealand species ; this view I have adopted, and so 7. Za¢ifolia appears as a 
peculiar species in Schedule 1. 
In comparing the specific elements of this flora we may confine ourselves, firstly 
to the extra-Australian non-endemie species and the continental ones ; of the former 
there are eleven, of which nine are also in New Zealand; of the latter there are six, 
reducible to five by elimination of Lagunaria Patersont, from which it appears that 
the larger community of species is greater with New Zealand than with Australia. 
In the second place, the large proportion of endemic species, nearly one-half, still 
further isolates this flora from Australia, though almost equally so from New Zealand; 
but viewed in the light of the generic facies, which is decidedly pronounced in favour 
of New Zealand, the flora of Norfolk Island must be regarded as a satellite of that of 
New Zealand. 

