370 MERUILL. 



Guinea, will prove that the eiideinism is nearly as great in all these 

 regions as it is in the Philippines. 



Rhododendron. Varcinium. 



Total. Endemic. Total. Endemic. 



Borneo 20 16 S 7> 



Java 8 1 11 4 



Malay Peninsula 8 4 10 4 



Sumatra 11 3 4 



Celebes 3 14 



Xew (hiinea 19 19 9 9 



China 135 125 16 13 



Formosa 6 3 3 2 



Philippines 16 16 19 18 



Of the Philippine species, Gaultheria cuntingiana has l)een found in 

 Formosa, and G. horneensis in Luzon, Borneo and apparently also in 

 Formosa. Vacciniuin micro pliylluni Bl. is found in Celebes, Ternate, 

 and probably also in Borneo and the ]\Ialay Peninsula, although its 

 e.xact distribution is a matter of some doubt. The remaining species are 

 mostly local in distril)ution, but some, notably Vaccinium villarianum, 

 llliododeicdron quadrasianum, and R. l-ochii arc found on most, if not 

 all high mountains from northern Luzon to southern ^lindanao, thus 

 supplying some evidence as to the homogeneity of the Archipelago. 



The presence of these numerous species of Ericacew on the mountains 

 of the Philippines, indicates the subtemperate natui'e of the v(>getation 

 of the higher peaks, a character of the higher mountains of tlie entire 

 Malayan region. 



Several genera of the family are found in Formosa, soutlierii China, 

 the Malay Peninsula and in Borneo that have not as yet been found in the 

 Philippines, and sonic of these, es])('cially .{(/nprli's. may l)e expected to 

 be found later in the Archipelago. 



KKY TO THE GENERA. 



Ovary inferior; fruit a berry 1. \'(icciiiiiiin 



Ovary superior; fruit a capsule. 



Cay)sule 5-valved, loculicidal ; calyx surround inf,^ tlie ca[)sule aiul succulent in 

 fiuit; flowers small; plants usually aromatic. 



Anthers with two horns at the apex _.. 2. Gaultheria 



Anthers not horned at the apex 3. Diplycosia 



Capsule septicidal ; calyx not enlarged and succulent in fruit ; anthers dehiscing 

 by pores; flowers medium or large A. Rhododendron 



