16, 6 Merrill: Philippine Euphorbiaceae, III 577 



EXCOECARIA MACROPHYLLA (Hassk.) J. J. Sm. in Meded. Dept. 

 Landbouw 10 (1910) 611. 



Luzon, Nueva Ecija Province, Munoz, 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. nov. 



Myrica luzonica Vidal Sinopsis Atlas (1883) 40, t. 90, f. B; Rolfe 



in Journ. Linn. Soc. Bot. 21 (1884) 316. 

 Sapiuvi merrillianum Pax & Hoffm. in Engl. Pflanzenreich 52 (1912) 



213. 

 Sapiuni latenflorum 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 Mijrica 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 laterifiorum, this being later re- 

 named by Pax and Hoffmann Sapium merrillianum. The 

 type of Sapium lateriflorum Merr. was from Bataan Province, 

 Luzon. The forti later described by ne as Urandra elliptica, 

 the type being a fruiting specimen, was also from Bataan Prov- 

 ince; it is clearly synonymous with Sapium 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, Mernll 

 Phil. PI. U07: Bataan Province, Mount Mariveles, Lamao, Wil- 

 liams 6Jf3, For. Bur. 338 Barnes, For. Bur. 2565 Borden (type 

 of Sapium lateriflorum Merr. and of S. merrillianum Pax) , For. 

 Bur. 17601, 19153 Ciirran; Duale, For. Bur. 20003 Topacio (type 

 of Urandra elliptica Merr.) : Rizal Province, San Isidro, For. 



