PHILIPPINE DIPTEROCARPACEAE. 
273 
Mocanera guiso Blanco FI. Filip, ed. 1 (1837) 449. 
Dipterocarpus guiso Blanco FI. Filip, ed. 2 (1845) 313. 
Anisoptera guiso A. DC. Prodr. 16 2 (1868) 616. 
S. vidaliana Brandis 1. c. 83. 
Leaves chartaceous, ovate-lanceolate, acute or acuminate, base rounded 
or cuneate, glabrous or nearly so. Secondary nerves 15 to _ 18 pairs. 
Leaf-blade 7 to 15 cm long, 2 to 6 cm wide; petiole 1 to 3 cm long. 
Flowers described by Blanco as having 30 stamens. Fruit with three 
wings which are 2.5 to 3 cm long and 4 to 8'mm wide ; the two short wings 
15 to 20 mm long, 2 to 4 mm wide, linear or'spatulate ; fruit 4 to 6 mm 
in diameter and about 6 to 8 mm high, slightly stouter than the fruit of 
S. polysperma. 
This species most closely resembles S. polysperma, from which it 
differs in its grayish bark, harder and grayer wood, usually thinner leaves 
which taper toward the base and are not inrolled at the margins, and 
the shorter and stouter fruit. The species is sufficiently variable to make 
any one set of characters of only Comparative value and it is often ex- 
tremely difficult to distinguish these two species from sterile material. 
Luzon, Province of Cagayan, For. Bur. 14730 Darling , For. Bur. 16960, 17255 
Curran: Province of Isabela, For. Bur. 14842 Darling: Province of Ilocos Norte, 
For. Bur. 13851, 14012 Merritt <£• Darling: Subprovince of Bontoc, For. Bur. 
17015 Curran : Province of Abra, For. Bur. 14653 Darling : Province of Nueva 
Vizcaya, For. Bur. 10877 Curran, For. Bur. 18025 Merritt: Province of Nueva 
Ecija, For. Bur. 81/39, 8466 Curran, For. Bur. 11/307 Saroca : Province of Panga- 
sinan, For. Bur. 8397 Curran cG Merritt, For. Bur. 131/71, 13511/ Medina, For. 
Bur. 11,354, 11,379 Villgm.il: Province of Tarlac, For. Bur. 15395 Zschdkke : 
Province of, Pampanga, For. Bur. 17692, 17735 Curran: Province of Zambales, 
For. Bur. 5811, 5995, 6912 Curran, For. Bur. 6081. Aguilar. For. Bur. 191,70; 
I .9475 Agama: Province of Bataan, Merrill 11,82 Garcia, For. Bur. 1,90, 1/91, 508, 
530, 51/3, 51/5, 550, 553, 572, 576, 581 Barnes, Dec. Phil, For. FI. 71 Barnes, Jan. 
1904, in flower, For. Bur. 659 Borden, April 1904, in flower, For. Bur. 1179, 
1.398, 1525, 1530, 1533, 1559, 1572 Borden, For. Bur. 1799 Borden, Sept, 1904, in 
fruit, Bur. Sci. 1605, 1611,, 161,2 Foxworthy, For. Bur. 5276, 5951,, 6374, 17522 
Curran, For. Bur. 731,4 Curran, June 1907, in fruit, For. Bur. 1351,2 Alvarez: 
Province of Bulacan, Bur. Sci. 12267 Foxworthy: Province of Rizal, Vidal 984, 
For. Bur. 1,40, 1167, 2865 Ahern's coll., April-June 1904-5 in flower, For. Bur. 
3088 Ahern’s coll,, Bur. Sci. 20 Foxworthy, Bur. Sci. 11,60 Ramos, For. Bur. 
10038. Curran: Province of La Laguna, For. Bur. 19125 Tamesis, For. Bur. 
22290 Mariano: Province of Batangas, For. Bur. 7687 Curran & Merritt: Prov- 
ince of Tayabas, For. Bur. 6056 Kobbe, For. Bur. 10174, 10269, 10320, 10375, 
10393, IO 4 OO Curran, For. Bur. 18660 Darling, Bur. Sci. 13116 Foxworthy & 
Ramos: Province of Camarines, Ahern 129 Garcia, For. Bur. 1,537 Barredo, For. 
Bur. 101,61, 10670, 10701, Curran: Province of Albay, For. Bur. 15003 Aldor : 
Province of Sorsogon, For. Bur. 10629 Curran. Marinduque, For. Bur. 12159 
Rosenbluth. Ticao, For. Bur. 12552 Rosehbluth. Masbate, Whitford 1691,, For. 
Bur. 12565 Rosenbluth, For. Bur. 21002 Darling. Mindoro, For. Bur. 5387, 8673, 
8778, 8783, 9712, 9766, 11387, 12025 Merritt. Samar, For. Bur. 12873, 12849 
Rosenbluth. Leyte, For. Bur. 12799 Rosenbluth. "Negros, Province of Negros 
