262 MacCauGHEY: THE STRAND FLORA 
The isolation of the Hawaiian flora is reflected in the vegetation 
of the littoral zone by the high proportion of endemic species, 
32 out of a total of 110, or 30 per cent. Nine of these belong to 
endemic genera. This is a remarkable showing, since littoral 
floras, in all parts of the world, are usually comprised almost wholly 
of cosmopolitan and non-endemic constituents. 
SouTH PACIFIC EQUIVALENTS OF HAWAII 
In the comparisons which are likely to be made of the Hawaiian 
flora with those of the South Pacific islands it is important to 
recognize the geologic and topographic status of the various 
island groups. Guppy (’06, p. 14) makes the eee significant 
observationt: 
The Hawaiian Islands, standing alone in the North Pacific, form a floral region 
in themselves, a region that is the equivalent not of one group in the South Pacific, 
such as that of Fiji or of Tahiti, but of the whole area comprising all the groups ex- 
tending from Fiji to the Paumotu Archipelago. 
For the purposes of this paper the islands and continental 
coasts of the Pacific region may be roughly divided into the fol- 
lowing great phyto-geographic provinces, listed clockwise in and 
around this greatest of marine basins. These provinces are not 
presented as of equal biological value or range, but merely for 
purposes of convenience in description. 
f ct woes SIBERIA AND ALASKA: Kamchatka, raat Tschuktsche, 
Al Islands, Alaska, British Columbia, and coastal islan 
‘ ie aie oF NortH AMErica: Washington, Oregon, see and coastal 
islands. 
3- Paciric Coast oF MEXICO AND CENTRAL AMERICA: Lower California, Manion: 
Guatamala, Honduras, Nicaragua, Costa Rica, Panama. 
4. Paciric COAST OF NORTHERN SOUTH sega Colombia, Ecuador, Galapagos 
Islands, Peru, Chile, Juan Fernandez Islan 
vd 
5. PAciric COAST OF SOUTHERN SOUTH AMERICA: eee and coastal islands; Tierra 
del Fuego. 
6. oe ipampey Tasmania, New Zealand, and adjacent islands. 
7. MALAYSIA: matra, caine epone: and other Sunda Islands; Moluccas, New 
uinea, Pi ine Isla 
8. SOUTHEASTERN ASIA: leis Hai-nan, Indo-China, Cochin China, Cambodja, 
Siam, vei Peninsula. 
. PACIFIC Cons ST OF CENTRAL AsIA: Japan, Riu-Kiu Islands, Formosa, and adja- 
‘0 
9 
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marck Archi ee) Louisiade, Solomon, Santa Cruz, New 
and Loyalty Islands, New Caledonia, Fiji, and intervening smaller 
