170 
FOXWORTHY. 
antheriferous bracts suborbicnlar, denticulate. Cones solitary, on short 
erect branches, maturing in the second year, 5-8.5 cm long, 1-5 cm in 
diameter, usually attenuate ovate. Cone scales woody, oblong, 12-23 
mm long, 7-9 mm broad, slightly convex without, within subexcavate at 
the base to receive the seed, apex thickened shining, center of apoplrysis 
depressed and from the center to the circumference foveate-striate ; seed 
inserted toward the base of the scale, wing oblong knife-shaped 14 mm 
long, about 4 mm broad, pale-yellow, pellucid. Cotyledons usually six, 
very short obtuse. 
On well-drained dry ridges in Zambales and Mindoro. Mr. Merritt, who has 
very carefully studied the distribution of this species, says : 6 “Southwest of the 
high mountain chain stretching north and south from Mount Halcon is an area 
with a temperature considerably lower than that of sea level and with a well- 
drained and often extremely dry soil. Here conditions are right for the growth 
of pine ( Pinus merkusii) . This tree grows in pure stands and is found in open 
scattered groves along the higher ridges and slopes, sometimes extending well 
down toward sea level. This pine was observed at elevations as low as 60 m 
in the vicinity of Santa Cruz, the southern part of its range, while at its northern 
limits it was nowhere seen below 900 m. Ground fires annually burning over 
the grass which has crept in among these trees prevent the best of reproduction 
and keep the forest open.” The latitude, of the region referred to in Mindoro 
is from about 13° to about 13° 20' N. 
This species is represented in our herbarium by the following numbers : 
Luzon, Province of Zambales, Ahern 829, Russell, July 1902, Merrill 1158, 
Medina, Jan. 1903, Dec. Phil. For. Flor. 240 Maule, Nov. 1904, with the following 
field note : “Grows in pure stand on heights some 15 kilometers east of Sta. Cruz, 
Zamb. Forest of irregular area covering as estimated 500 hectares. Soil is loose 
and impregnated with copper oxide giving a dark color. No undergrowth of trees 
other than pine exists and fires greatly retard reproduction so that seedlings 
are at present rarely found. Where growing in stands they are open resembling 
character of white pine (P. strobus) of U. S. Many trees growing more or less 
as individuals which fact seems due to influence of soil. No P. insularis occurs 
in this forest but it occurs at Botolan.” For. Bur. 8228 Curran, Dec. 1907. 
Mindoro, For. Bur. 8521, 8734a Merritt, Jan. 1908, For. Bur. 8830, 8831 Merritt, 
Feb. 1908. 
Native names : salit, tapulao, aguu, agoo. 
Distribution: Burma; Cochin China; Sumatra; Java; Borneo; the Philippines. 
2. Pinus insularis Endl. Syn. Conif. (1847) 157; Presl Epim. Bot. (1851) 
37; Pari, in DC. Prodr. 16 2 (1868) 390; F.-Vill. Noviss. App. (1880) 212; 
Vidal Sinopsis Atlas (1883) xliii, t. 98, f. C; Phan. Cum. Philip. (1885) 160; Rev. 
PI. Vase. Filip. (1886) 296; Ceron Cat. PL Herb. (1892) 188; Merr. in For. 
Bur. Bull. (Philip.) 1 (1903) 15; Perk. Frag. FI. Philip. (1904) 35; Merr. in 
Bur. Govt. Lab. Publ. (Philip.) 6 (1904) 6; Philip. Journ. Sci. 5 (1910) Bot. 
325; Whitford Philip. For. Bur. Bull. 1 0 part 2 (1911) 26, pis. 2, 3. 
P. insularis x P. merkusii Perk. Frag. FI. Philip. 1. c. 35. 
Pinus sp. Merr. in For. Bur. Bull. (Philip.) 1 (1903) 15. 
P. taeda Blanco Fl. Filip. (1837) 767; Merr. in Bur. Govt. Lab. Publ. (Philip.) 
27 (1905) 82, non L. Sp. PL (1753) 1419 ex parte. 
° The Forests of Mindoro. Philip. For. Bur. Bull. 8 (1908) 22. 
