4 MERRILL. 
Desmodium, Mucuna, ete., are distinguished, yet the movement by some 
botanists again to raise certain groups of species, in the above and other 
genera, to generic rank, meets with comparatively little support. The 
author is personally of the opinion that it would be more logical and 
practically as convenient, to divide some of the larger genera into several 
smaller ones, where the sections or subgenera are sharply defined as are 
some of them in Caesalpinia, Cassia, Desmodium, ete. For purposes of 
comparison, however, generic limits as defined by Bentham and_ by 
Taubert are retained in the present paper. 
Generic nomenclature in the present enumeration differs from that 
of De Dalla Torre & Harms “Genera Siphonogamarum” only in two 
cases, these being the adoption of Delonix Raf. for Caesalpinia auct., 
non L., and Parosela Cav. for Dalea L., for what are considered valid 
reasons. 
The only previous attempt to enumerate all the species of this family 
known in the Philippines was by F.-Villar,' who credited to the Archi- 
pelago 78 genera and 229 species. Of these, it has been necessary to 
exclude 6 genera and about 35 species, as no material is extant by which 
F.-Villar’s identifications can be checked, and the excluded genera and 
species have not been found in the Philippines by any preceding or suc- 
ceeding botanists. 
In the present enumeration 90 genera are considered. Of these, two, 
Monarthrocarpus, described as new, and Luzonia, are monotypic and 
endemic; the former allied to Desmodium § Podocarpium, and the latter 
to Dioclea. Of the 90 genera included, 14, Enterolobuum, Leucaena, 
Schrankia, Mimosa, Prosopis, Tamarindus, Delonix, Medicago, Gliricidia, 
Arachis, Pisum, Centrosema, Pachyrrhizus, and Psophocarpus, are repre- 
sented in the Philippines by introduced species only, while in other 
genera, such as Cassia, Crotalaria, Desmodium, etc., there are many in- 
troduced forms. 
The number of species recognized is 285, with several varieties, and 
this list will doubtless be somewhat increased as exploration progresses. 
Of these 285 species I consider the following 53 to have been introduced, 
although most of them are now thoroughly naturalized and must be con- 
sidered as constituents of the Philippine flora: Hnterolobium saman,* 
Pithecolobium dulce,* Albizzia lebbeck, Acacia farnesiana,* Leucaena 
glauca,* Schrankia quadrivalvis,* Mimosa pudica,* Prosopis vidaliana,* 
Cynometra cauliflora, Tamarindus indica (prehistoric), Bauhinia tomen- 
tosa, B. monandra,* Cassia fistula, C. glauca, C. tora, C. hirsuta,* C. 
sophera,* C. occidentalis,* C. alata,* C. siamea, Delonix regia, Caesalpinia 
; pulcherrima,* Crotalaria juncea, C. incana,* Medicago denticulata, M. 
sativa, Trifolium pratense, 1’. hybridum, T'. incarnatum, T'. repens, Indi- 
gofera suffruticosa,* Parosela glandulosa,* Gliricidia sepium,* Sesbania 
Novy. App. (1880) 57-76. 
