INTRODUCTION 27 
cited by Blanco, and the reduction so far as such reduction 
could be determined. When necessary additional data were 
given, such as the locality in which Blanco observed the species, 
the time of flowering, and other brief notes. The species of 
uncertain status were indicated by an asterisk, these totaling 
two hundred and thirty-six. 
Too much dependence was placed on the generic identifications 
of Fernandez-Villar and Naves, which for lack of special knowl- 
edge of the problem I was obliged to accept, in whole or in part, 
in 1904. With a more intensive knowledge of the Philippine 
flora and a critical study of Blanco’s descriptions it has become 
clear that they were totally wrong in their reductions in 
numerous cases. 
Appended to the systematic enumeration was an index to Latin 
names used by Blanco in the first and second editions of the 
Flora de Filipinas, giving page references to my own work, to 
the first, second, and third editions of the Flora de Filipinas, 
and to the Novissima Appendix of Fernandez-Villar and Naves. 
A supplementary index to native names was also included for 
convenience in field work. 
The object of this work, which succeeding events justified, was 
thus stated: 
The present paper has been prepared in order to summarize in convenient 
form our present knowledge of the species of plants described by Blanco 
and to call especial attention to such as are at present unknown, in order 
that collectors in the future may have some guide in collecting material 
which may serve to clear up the identity of some of his unknown species 
*. .* *. For the. best interests of Philippine botany it is very essential 
that every effort be made to properly identify the large number of unknown 
species proposed by Blanco, as with so many in our flora a stable nomen- 
clature cannot be established until the majority are properly identified. 
From time to time various Blancoan species were discussed 
by me in miscellaneous papers on the Philippine flora, and one 
supplementary special paper was issued on the subject.** In 
this paper critical notes are given on forty-eight of Blanco’s 
species that were for the most part not definitely placed in my 
first paper on Blanco’s species. 
FACTORS TO BE CONSIDERED IN INTERPRETING BLANCOAN SPECIES 
In the first and second editions of his Flora de Filipinas 
Blanco described a total of 1,136 plants under binomial or tri- 
nomial names; the trinomials for the most part occur under 
"Merrill, E. D. Additional identifications of the species described in 
Blanco’s Flora de Filipinas Philip. Journ. Sci. 2 (1907) Bot. 429-436. 
