248 
The Philippine Journal of Science 
1916 
Microlaena, Ascarina, Phrygilanthus, Spiraeopsis, Clianthus, 
Wallaceodendron, Koordersiodendron, Reinwardtiodendron, Stro- 
phioblachia, Neotrewia, Oncocarpus, Pleiogynium, Tristira, 
Osbornia , Anompanax, Lepiniopsis, Dedea, Dolicholobium, Euca- 
lyptus, Pimelea, Euphorianthus, Vavaea (also in Java), Xanthos- 
temon, Schuurmansia, Ganophyllum, Uncinia, Normanbya, 
Pothoidium, Macropsychanthus, Tetraplasandra (also in Hawaii) , 
Couthovia, Nycticalos, Calogyne (also in southern China), 
Phacelophrynium, and Paralstonia, Here we have a list of 
nearly forty genera, many of them monotypic, and very few that 
contain numerous species, confined to the Philippines and to 
the islands to the south and southeast. No list at all approach- 
ing this can be compiled for the Philippines and the islands 
to the west and southwest, or the Sunda Islands proper, including 
also the Malay Peninsula. A similar list of genera confined 
to this area would include practically only Eusuderoxylon, 
Philbornea, Koompassia, Kunstleria, Clemensia, Polytrema, 
Hallieracantha, Monophyllea, and Adinabotrys ( Whitfordioden - 
dron ) . 
As to the limited distribution of species, the special distribu- 
tion between the Philippines and the islands to the south and 
southeast is strongly developed, in close correspondence with 
the special generic relationships, while that with the islands to 
the west and southwest is correspondingly weak. So far as 
deductions can be drawn on the basis of our present knowledge 
of the Philippine and Malayan floras, the evidence preponderat- 
ing^ points to a closer connection between the Philippines and 
the regions to the south and southeast than with the islands 
to the west and southwest of the Archipelago. At any rate, 
the evidences of floristic relationships between the Philippines 
and Celebes and the Moluccas is so great that the systematist 
working on the flora of either area should give special attention 
to the species already described from the other area in working 
up his material. 
In connection with the present enumeration of Amboina plants 
included in the series Reliquiae Robinsonianae, I am indebted 
to Doctor 0. Beccari, Florence, Italy, for the determination of the 
palms; to M. C. de Candolle, Geneva, Switzerland, for the treat- 
ment of the genus Piper; to Doctor Th. Valeton, Buitenzorg, 
Java, for the treatment of the Marantaceae; to J. Sykes Gamble 
Esq., East Liss, Hants, England, for assistance in determining 
the identity of the single bamboo enumerated, and to Mr. G. K. 
Merrill, Rockland, Maine, U. S. A., for the consideration of the 
lichens. 
