186 
SUMMARY 
The floras of Formosa and the Philippines 
are distinctive in their general nature. The 
former is related especially to the Chinese 
mainland and the latter to Malaysia. Their 
close geographic proximity, however, has al- 
lowed certain floristic interchanges in relative- 
ly recent times. An earlier movement was the 
southward migration of temperate elements 
from Formosa to the Philippines. These are 
mostly montane and alpine elements and, in 
the Philippines, largely confined to the moun- 
tains of northern Luzon. These elements are 
now of wide disjunct distribution and are 
related to the alpine floras of western China 
and the Himalayas. A more recent movement 
is the northward expansion of tropical ele- 
ments from the Philippines to Formosa. These 
are usually lowland plants and are found in 
Formosa limited mostly to the southern ex- 
treme of the island and the adjacent small 
islands Lanyu and Lutao. Floristic notes on 
certain species common to the Philippine and 
Formosan floras but considered by former 
authors as distinct are given. 
PACIFIC SCIENCE, Vol. VII, April, 1953 
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