370 MERRILL. 
Guinea, \\ill prove that the endeiuism is nearly as great in all these 
regions as it is in the Philippines. 
Rhododendron. Vaccinium. 
Total. Endemic. Total. Endemic. 
Borneo 20 16 8 5 
Java 8 1114 
Malay Peninsula 8 4 10 4 
Sumatra 11 3 4 
Ct'lcbes 
1 4 
New Guinea 19 19 9 9 
China 135 125 16 13 
Formosa 6 3 3 2 
Philippines 16 16 19 18 
Of the Philippine species, GauWieria cumingiana has been found in 
Formosa, and G. horneensis in Tjuzon, Borneo and apparently also in 
Formosa, Vaccinktm micro phyllum. Bl. is found in Celebes, Ternate, 
and probably also in Borneo and the Malay Peninsula, although its 
exact distribution is a matter of some doubt. The remaining species are 
mostly local in distribution, but some, notably Vaccinium viUarianum, 
Rhododendron quadrasianum, and It. I'ochii are found on most, if not 
all high mountains from northern Luzon to southern Mindanao, thus 
supplying some evidence as to the homogeneity of the Archipelago. 
The presence of these numerous species of Ericacece on the mountains 
of the Philippines, indicates the subtemperate nature of the vegetation 
of the higher peaks, a character of the higher mountains of the entire 
Malayan region. 
Several genera of the family are found in Formosa, southern China, 
the Malav Peninsula and in Borneo that have not as vet been found in the 
t'^ 
Philippines, and some of these, especially Agapetes, may be expected to 
be found later in the Archipelago. 
w 
KEY TO THE GENERA. 
Ovary inferior; fruit a berry I. Vaccinium 
Ovary superior; fruit a capsule. 
Capsule 5-vaIved, loculiciilal; calyx surrounding the capsule and succulent in 
fruit; flowers small; plants usually aromatic. 
Anthers M'ith two liorns at the apex 2. Gaiiltheria 
Anthers not horned at the apex 3. Diplycosia 
Capsule septicidal; calyx not enlarged and succulent in fruit; antliers dehiscing 
by pores; flowers medium or large 4:. Rhododendroti 
