26 
MERRILL. 
Curran: Province of Rizal, Merrill 1306, 1635, 5035, Decades Philip. Forest Flora 
no. 53 Ahern’s collector: Province of Bataan, Whitford 35, 1367, Williams 371, 
Elmer 6688, For. Bur. 5291, 6291, 6375 Curran, Bur. Sci. 1566 Foxworthy, For. 
Bur. 687, 689, 7 20 Borden, For. Bur. 366, 507 Barnes: Province of Tayabas, Merrill 
201t7, 2595, For. Bur. 1251 Rosenbluth, For. Bur. 11)91)1) Darling, For. Bur. 6066 
Kobbe, For. Bur. 11517 Whitford, Bagger s. n., For. Bur. 10261 Curran: Province 
of Camarines, Ahern 11)2: Province of Sorsogon, For. Bur. 10622 Curran. Mix- 
dobo, For. Bur. 9723bis Merritt. Palawan, For. Bur. 71)29, 1121)9 Manalo, Curran 
s. n. Masbate, For. Bur. 995 Clark, For. Bur. 12579, 12602 Rosenbluth. Negros, 
For. Bur. 11238 Everett, For. Bur. 18230 Rosenbluth. 
Native names: Acle (in most islands and provinces where it is found, and 
its commercial name) ; quitaquita (Ilocos Sur, Pangasinan, Zambales) ; tili, teles 
(Zambales) ; langin (Masbate) ; sauriri (Palawan) ; banuyo (Negros). 
After a careful study of the above material, I am convinced that the species 
must be referred to Albizzia, rather than to Pithecolobium, where it was placed 
by Vidal. It differs from Pithecolobium, at least from the majority of the 
species now referred to that genus, in its straight and indehiscent pods, the first 
character being true of all species of Albizzia known to me, while a number of 
species have indehiscent pods. The seeds of Albizzia acle have on both sides 
rather distinct horseshoe-shaped markings,, corresponding to the circular, oblong, 
oval, or elliptic markings on the seeds of Albizzia spp., and Enterolobium saman, 
while none of the species of Pithecolobium in this herbarium show corresponding 
scars or lines. The bark of Albizzia acle contains a considerable amount of 
saponin, like that Albizzia saponaria Blume, and like that of the latter species, 
is used by the natives as a substitute for soap; I know of no species of Pithe- 
colobium having this property. The wood of this species has been described by 
Foxworthy; 11 it is dark-colored, moderately hard and heavy, and in structure 
and properties much more like that of various species of Albizzia than of Pithe- 
colobium. Among the Philippine species it is most closely allied to Albizzia 
saponaria Bl. 
Albizzia acle is a valuable timber tree in the Philippines, and is widely 
distributed at low altitudes. It is commercially known as acle, and the timber is 
used for many purposes. 
Endemic. 
EXCLUDED SPECIES. 
Albizzia lucida (Roxb.) Benth. ; F.-Vill. Nov. App. (1880) 75. 
An Asiatic species, doubtfully extending to Singapore and Java, and not 
definitely known from the Philippines. Probably an erroneous identification on 
the part of F.-Villar for some form of A. saponaria Bl. 
Albizzia odoratissima (L. f.) Benth.; F.-Vill. 1. c. 
Like the preceding, a species not definitely known from the Philippines. Prob- 
ably an erroneous identification for A. lebbekoides Benth. 
5. WALLACEODENDRON Koorders. 
1. Wailaceodendron celebicum Koord. Meded. ’s Lands Plantent. 19 (1898) 
446, 631; Gilg in Engl. & Prantl Nat. Pflanzenfam. Nachtr. 2 (1900) 30; Merr. 
Forest. Bureau (Philip.) Bull. 1 (1903) 23, Philip. Journ. Sci. 3 (1908) Bot. 
409; Perk. Frag. FI. Philip. (1904) 5. 
Pithecolobium williamsii Elm. Lead. Philip. Bot. 1 ( 1907 ) 223. 
Babuyanes Islands, Camiguin, Bur. Sci. 1)098 Fenix: Province of Cagayan, 
11 This Journal 2 (1907) Botany 269. 
