346 Notice of Dr. Hooker's Flora of New Zealand. 
Pacific and southern me hominphere generally. These may be classed 
under three heads: 
1. Those that comet identical or representative species of the Ant- 
arctic Flora, and none that are peculiarly Arctic; as the Tasmanian 
and New Zealand aie 
2. Those that pie besides these, a of the Northern 
and Arctic Floras;¢ as the South American Alps. 
. Those that contain the peculiarities of neither; as the mountains 
of South Africa and the Pacific Islands 
We thus observe that the want of an Arctic or Antarctic Flora atall 
in the a islands, and the presence of an oe a one in the Ameri- 
can Alps, are the prominent features; and I s onfine my remarks 
upon these to the fact that, with regard to = ghee wi islands of the 
Pacific, they are situated in too warm a latitude to have had their tem- 
which many Antarctic ones may have anal northward to the 
equator 
There is still another point in connection with the subject of the rel- 
ative antiquity of plants, and in adducing it I must again refer to the 
‘Principles of Geology,’ where it is said, ‘Asa general rule, species 
common to many distant provinces, or those now found to inhabit many 
rv 
Physical Geography.’|| If this be true, it follows that, consistent with 
the theory of the antiquity of the Alpine flora of ealand, we 
should find amongst the plants common to New Zealand aa the Ant- 
arctic islands, some of the most oe ., and we do so in Montia 
* T need scarcely remind my reader in thus sketching the characteristics of 
these Alpine floras, I make no altel we exceptions that do not alter the main fea- 
tures. Iam far from asserting cr — are no peculiar Arctic or Antarctic forms 
in the Pacific —— nor = peculiarly arelis ones in Tasmania ew Zealand: 
but if, on the one hand, futu eiscoveries of such shall weaken the sale of differ- 
in regio 
ence between these ot 
strengthened by adducing ates nu eae of Arctic species common to the South Amer 
nD 
+ These Antarctic forms are ve' er numerous; familiar ones are Acena, Drapetes, 
Donatia, Gunnera, Oreomyrrhis nophora, Pumrk Ourisia, Fagus, Callexene, 
Astelia, i Alepyran Oreos Carpha, Uncinia, Fre 
Berberis, Sisymbri aspi, Arabis, Draba, —— Lychnis, Cerastium, pied 
garia, Lathyrus, Vicia, ‘pucks Chrysoplenium, Ribes, Sazxifraga, Valeriana, Aster, 
oe Te Primula, Anagallis, Pinguicula, Statice, Empetrum, Phleum, 
us. : 
these a forms have not extended into North America, as tH ead 
ve into merica, is a curious problem, and the only hypothesis pes 
suggests i derived fi mi the fact ¢ hough the P d rea 
. ; ien' 
tion that they ane ve had sufficient ‘altitude at a f er period, and that one 
which preceded the of the i nal ie er northern latitude. 
