90 JOURNAL OF SCIENCE, 
place here to go into these points minutely, because to do so 
would involve a mere recapitulation of Mr. Wallace’s able and 
conclusive arguments, and I shall therefore only confine myself to 
a short examination of the relations of our flora to that of Eastern 
and Western Australia respectively. I have to avologise if I now 
descend into statistics, as the subject can hardly be treated in any 
other manner. 
New Zealand possesses altogether 310 genera of flowering 
plants (303 A.R.W.), of which 248 (251 A.R.W.) are found in 
Australia, and of this number 146 range into Western Australia, 
But of these no less than 114 genera are more or less widely 
distributed outside the Australasian region, leaving only 31 genera 
peculiar to New Zealand and Australia which range into Western 
Australia. I append the names of these genera,* but my 
knowledge of the Australian flora is much too limited to enable 
me to say how many of them have their headquarters in Eastern, 
or how many in Western Australia. In this connection greater 
interest attaches to those species which occur in both New 
Zealand and Western Australia. There are altogether 215 New 
Zealand species (belonging to 134 genera) found in Australia, 
many of them being Antarctic or South American forms which 
occur very sparingly on the mountains of Victoria and Tasmania. 
Of these 215 species, 106 (belonging to 79 genera) range into 
Western Australia ; but subtracting 68 species (52 genera) which 
have a very wide distribution, we find that we have still 38 species 
of limited dispersion to consider. Of these 24+ belong to genera 
whose headquarters are outside of Australia, and their spread 
into Western Australia is probably more recent than into New 
Zealand ; 7{ belong to genera which are chiefly found in Eastern 
Australia, from whence the species in question have probably 
spread themselves east and west; and 7§ more are of genera 
of which J do not know the centre of dispersion. 
A close examination of the whole leads strongly to the con- 
clusions that the basis of the floras of Eastern Australia and 
New Zealand are somewhat identical; that both have received 
immigrants independently after their separation, from north and 
south, Australia, by reason of its northern land connections with 
* New Zealand genera confined to New Zealand and Australia, which occur in 
Western Australia:—(1) Pittosporum, (2) Plagianthus, (3) Phebalium, (4) Stack- 
housia, (5) Pomaderris, (6) Discaria, (7) Swainsonia, (8) Leptospermum, (9) 
Actinotus, (10) Olearia, (11) Brachycome, (12) Craspedia, (13) Cassimia, (14) 
Ozothamnus, (15) Sczevola, (16) Dracophyllum, (17) Logania, (18) Persoonia, (19) 
Pimelea, (20) Poranthera, (21) Prasophyllum, (22) Pterostylis, (23) Cyrtostylis, (24) 
Caladenia, (25) Arthropodium, (26) Leptocarpus, (27) Calorophus, (28) Microloena, 
(29) Deyeuxia, (30) Kchinopogon, (31) Schcedonorus. ; 
fT (1) Ranunculus lappaceus, (2) R. plebeius, (3) R. rivularis, (4) Claytonia 
australasica, (5) Linum marginale, (6) |’elargonium australe, (7) Tillzea purpurata, 
(3) Myriophyllum varizefolium, (9) M. pedunculatum, (10) Epilobium glabellum, 
(11) Daucus brachiatus, (12) Senecio lautus, (13) Microseris Forsteri, (14) Sebza 
ovata, (15) Myosotis australis, (16) Mimulus repens, (17) Salicornia australis, (12) 
Carex inversa, (19) Deyeuxia forsteri, (20) D. quadriseta, (21) Danthonia semi- 
annularis, (22) Schcedonorus littoralis, (23) Glyceria stricta, (24) Bromus arenarius. 
{ (1) Vittadinia australis, (2) Erechtites prenanthoides, (3) Erechtites arguta, 
(4) Erechtites quadridentata, (5) Pterostylis squamata, (6) Microloena stipoides, (7) 
Echinopogon ovatus. 
§ (1) Poranthera microphylla, (2) Thelymitra longifolia, (3) Schoenus axillaris, - 
(4) Cladium glomeratum, (5) Gladium gunnii, (6) Dichelachne stipoides (Stipa tereti- 
folia), (7) Dichelachne crinita. retIL3 
