ORCHIDACEA 
Ames and Eulophia squalida Lindl. that extend over a wide 
range, but the majority of orchids, if conclusions based on present 
knowledge are to be relied on, are held within comparatively 
small geographical areas and are restrained in their distribution 
by influences of which we have little or no understanding. This 
lesson is easily learned from a study of those Philippine species 
that seem to be localized on an island or within a province. 
In the following list the genera are arranged, with a few ex- 
ceptions, in the sequence adopted in the fifth fascicle of Orchi- 
daceae. This arrangement follows closely the system proposed 
by Engler and Prantl. 
HABENARIA Willd. 
Habenaria malintana (Blanco) Merrill Sp. Blancoanae 
(1918) 112. Thelymitra malintana Blanco Flora de Filipinas 
(1887) 642. Habenaria pelorioides Par. & Reichb. f. in Trans. 
Linn. Soc. 30 (1874) 135, 139, t. 27, f. A, 1-8. Habenaria tri- 
nervis Naves Novis. App. (1880) 250 non Wight. 
If Professor Elmer D. Merrill’s conclusions are adopted, the 
synonymy given above would seem to be correct for the Philip- 
pine plant that has been referred to Habenaria pelorioides Par. 
& Reichb. f. in my previous lists of Philippine orchids. Merrill, 
with exceptional opportunities for exactitude and finality, has 
given concentrated attention to the task of clarifying obscure 
species described by Blanco, so that his conclusions must be re- 
garded as authoritative. Aside from the very rambling descrip- 
tion published in Flora de Filipinas, there are references that, 
once the clue to the species is given, seem to leave little, if any, 
room for doubt as to the plant Blanco wished to characterize. 
In the Novissima Appendix Naves referred Thelymitra malin- 
tana to the synonymy of Habenaria trinervia Wight, but on 
