THE PHILIPPINE 
JOURNAL OF SCIENCE 
C. BOTANY 
Vou. X JULY, 1915 No. 4 
STUDIES ON PHILIPPINE ANONACEAE, I 
By E. D. MERRILL * 
(From the Botanical Section of the Biological Laboratory, 
Bureau of Science, Manila, P. I.) 
The family Anonaceae is well represented in the Philippines, 
and current collections present rather a high percentage of novel- 
ties in this family. No attempt has been made here critically 
to study all the Philippine species, but merely to describe some 
of the apparently new forms in our abundant accumulated ma- 
terial, and to discuss some questions of nomenclature in regard 
to both genera and species. Twenty-four new species are 
proposed in the genera Uvaria, Alphonsea, Dasymaschalon, 
Meiogyne, Polyalthia, Mitrephora, Pseuduvaria, Orophea, and 
Goniothalamus. The designation Desmos of Loureiro is used in 
place of Unona for the oriental species, excluding the section 
Dasymaschalon which is here treated as a distinct genus. The 
genus recently described by Diels from New Guinean material 
as Papualthia is found to be represented in the Philippines by 
six species previously described under Polyalthia and Unona. 
In studying this Philippine Papualthia material, my attention 
was again called to the species of the Mariana Islands described 
by Safford as Papualthia mariannae and by me erroneously 
referred to Polyalthia, with the result that I have proposed to 
make Papualthia mariannae Safford the type of a new genus 
Guamia, its alliance being rather with Oncodostigma than with 
Papualthia. Griffithianthus is proposed as a new generic name 
for Griffithia Maingay, not of Wight and Arnott, and the genus 
is extended to the Philippines by the transfer of Mitrephora 
merrillit C. B. Rob. and the reduction of M. viridifolia Elm. 
* Associate professor of botany, University of the Philippines. 
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