170 FOXWORTHY. 
anthoriferous bracts suborbicular^ denticulate. Cones solitary,, on short 
erect branches^ maturing in the second year^ 5-8.5 em long, 1-5 cm in 
diameter^ usually attenuate ovate. Cone scales woody^ oblongs 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 apophysis 
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, 
ver}^ short obtuse. 
On well-drained dry ridges in Zambales and Mindoro. Mr. Merritt, who has 
very carefully studied the distribution of this species, says: " "Southwest of the 
iiigh mountain chain stretching north and south from Mount Haleon is an area 
Mith 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 merknsii) . 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, Ahem 829, Russell, July 1902, }ferrm UoS, 
:^cduia, Jan. 1903, Dec. Phil, For. Flor. 2^0 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 nnpregnated 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. strohus) of U. S. Manv 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 Gurran, Bee, 1907. 
Mindoro, For. Bur. 8621, 87J-}a Merritt, Jan. 1908, For. Bur. 8830, 8831 Mcrnft, 
I-eb. 1908. 
Native names: salit,^ tapulao, ayuu, agoo. 
Distribution: Burma; Cochin China; Sumatra; Java; Borneo; the Philippines. 
2. Pinus insularis Kndl. Syn. Conif. (1847) 157; Presl Epim. Bot. (1851) 
t!.\ To '" ^"'^'- ''®' <1^^^* ^^^' *^--^'"l- Noviss. App. (1880) 212; 
\ idal Sinopsis Atlas (1883) xliii, t. 98, f. G; Phan. CUm. Philip. (1885) 160; Rev. 
PI. Vase *^Hp. (1886) 296; Ceron Cat. PI. Herb. (1892) 188; Merr. in For. 
Bur. Bull (Ph.lip.) 1 (1903) 15; Perk. Frag. Fl. Philip. (1904) 35; Merr. in 
4T ^^:. \^f'- ^'^'^'^^•^ ' ^'■^'^4) 0; Philip. Journ. Sci. 5 (1910) Bot. 
325; ^Mu ford Philip. For. Bur. Bull. 10 part 2 (1911) 26, pis. 2, 3. 
P^mmdarts x P. merl-usii Perk. Frag. Fl. Philip. 1. e. 35 
P*"^/.. sp Merr. in For. Bur. Bull. (Philip.) 1 (in03) 15. 
27 Motrfr To I'' '^'''''' *''''* "'"' ^^^'^- ^^ ^^^' «ovt. Lab. Publ. (Philip.) 
27 (1905) 82, non L. Sp. PI. (1753) 1419 ex parte. 
. 'The Forests of Mindoro. Philip. For. Bur. Bull. 8 (1908) 22. 
