194 
The Philippine Journal of Science 
191 J 
1. PARASHOREA PLICATA Brandis. 
Luzon: Nueva Ecija, Bulacan, Rizal, Laguna, Tayabas, Camarines, 
Albay, Sorsogon. Polillo. Catanduanes. Masbate. Samar. Leyte. 
Cebu. Negros. Panay, Capiz. Biliran. Mindanao: Surigao, Agusan, 
Davao, Zamboanga. 
This is one of the most abundant and widely distributed species in the 
regions of even rainfall. 
2. PARASHOREA WARBURGII Brandis in Journ. Linn. Soc. Bot. 31 
(1895) 10, Foxw. in Lead. Phil. Bot. 6 (1913) 1954. 
Mindanao: Davao and Agusan. 
7. ISOPTERA Scheffer 
1. ISOPTERA BORNEENSIS Scheffer. Plate I. 
This species was collected in fruit May 26, 1914, by Ranger Oliveros, in 
the Zamboanga Peninsula, Mindanao, For. Bur. 23829 and 2383'9. It was 
also collected, in the same locality, two months later by Rangers Acuna 
and Belen, For. Bur. 22683. This is the first time that this genus has been 
reported from the Philippines. The specimens seem to match very well 
material collected in Borneo. The species is also known from the Malay 
Peninsula and Bangka. 
8. BALANOCARPUS Beddome 
This genus is distinct by reason of its calyx-lobes, which are pointed and 
shorter than the fruit. The trees of this genus are of large size and have 
very hard wood, which is a fine grade of yacal. Sixteen species are known, 
mainly in the Malay Peninsula and Borneo. 
Key to the Philippine species of Balanocarpus. 
a 1 . Calyx-wings only about one-half as long as the fruit; leaves narrowly 
oblong 1. B. cagayanensis. 
a'. Calyx-wings nearly as long as fruit; leaves lanceolate. 
2. B. brachyptera. 
1. BALANOCARPUS CAGAYANENSIS sp. nov. Plate II. 
Arbor magna. Foliis chartaceis, oblongis, acuminatis, basi 
cuneatis, rotundatis admodum leviter inaequilateralibus, 7 ad 13 
cm longis, 2 ad 4 cm latis. Nervis secundariis 10 ad 12, tertiariis 
approximatis, parallelis. Calycis segmentis quam fructibus 
duplo brevioribus. 
A large tree. Leaves oblong, acuminate, faintly cuneate, 
slightly rounded, or slightly inequilateral at the base, 7 to 13 cm 
long, 2 to 4 cm wide, margin slightly inrolled. Secondary nerves 
10 to 12 pairs, with occasional intermediate short veins. Ter- 
tiary veins approximate, mostly parallel. Domatia in axils of 
secondary veins. Glabrous above and almost glabrous beneath, 
occasional scattered hairs. Flower clusters not distinctly unila- 
teral, black or dark gray. Petals yellowish-brown in dried 
material, about twice as long as sepals. Petals pale-sericeous on 
the outside, glabrous within. Stamens with filaments expanded 
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