16, 6 Merrill: Philippine Euphorbiaceae, III 577 
EXCOECARIA MACROPHYLLA (Hassk.) J. J. Sm. in Meded. Dept. 
Landbouw 10 (1910) 611. 
LUZON, Nueva Ecija Province, Mujioz, For. Bur. 6029 Zschokke, 
November, 1906; Pangasinan Province, Umingan, For. Bur. 
26299 Ablaza, September, 1916, in both localities known as 
sausao or sausau. 
This species has previously been reported only from Java and 
from Borneo, but I can detect no characters by which the Luzon 
form can be distinguished from the Javan one, of which three 
specimens collected by Koorders are before me. The Philippine 
form has intensely irritating milky juice, Ablaza merely stating 
that it burns the skin, while Zschokke states: “The sap is milky 
and the natives dread it very much. It makes painful burns, 
destroying the skin as an acid does.” 
SAPIUM Jacquin 
SAPIUM LUZONICUM (Vidal) comb. noy. 
Myrica luzonica Vidal Sinopsis Atlas (1883) 40, t. 90, f. B; Rolfe 
in Journ. Linn. Soc. Bot. 21 (1884) 316. 
Sapium merrillianum Pax & Hoffm. in Engl. Pflanzenreich 52 (1912) 
2138. : 
Sapium lateriflorum Merr. in Philip. Journ. Sci. 1 (1906) Suppl. 
83; Elm. Leafl. Philip. Bot. 4 (1911) 1303, non Hemsl. (1901). 
Urandra elliptica Merr. in Philip. Journ. Sci. 5 (1910) Bot. 195. 
The type of Myrica luzonicum Vidal was from Montalban, 
Rizal Province, Luzon, a specimen with staminate flowers; and, 
while the original description is short, both it and its accompa- 
nying figure definitely place the species as identical with the 
one I later described as Sapium lateriflorum, this being later re- 
named by Pax and Hoffmann Sapium merrillianum. The 
type of Sapium lateriflorum Merr. was from Bataan Province, 
Luzon. The form later described by me as Urandra elliptica, 
the type being a fruiting specimen, was also from Bataan Prov- 
ince; it is clearly synonymous with Sapiwm luzonicum, repre- 
senting a plant with relatively broader leaves than the common 
form. The species is now represented by the following speci- 
mens: 
LUZON, Ilocos Sur Province, Tambor, For. Bur. 13027 Paraiso; 
Danglao, For. Bur. 23109 Cruz: Bulacan Province, Angat, Merrill 
Phil. Pl, 1407: Bataan Province, Mount Mariveles, Lamao, Wil- 
liams 643, For. Bur. 338 Barnes, For. Bur. 2565 Borden (type 
of Sapium lateriflorum Merr, and of S. merrillianum Pax), For. 
Bur. 17601, 19153 Curran; Duale, For. Bur. 20003 Topacio (type 
of Urandra elliptica Merr.): Rizal Province, San Isidro, For. 
