Dioecious. Staminate inflorescence axillary, spicate, 10 cm. long or less, solitary 

 or fascicled, glabrous or nearly so. Bracts subreniform to ovate, glabrous, about 

 1 mm. long, apiculate, each subtending a solitary flower, the calyx lobes very 

 small, 3, lanceolate, acuminate, less than 1 mm. long. Stamens 3; filaments 

 glabrous, 1.5 mm. long; anthers didynamous, about 1 mm. thick, 0.8 mm. long. 

 Pistillate inflorescence similar to the staminate but shorter, few flowered. 

 Sepals 3, broadly triangular ovate, acute, about 1 mm. long slightly glandular 

 at the apex. Ovary ovoid, glabrous, 3-celled, each cell 1-ovuled; styles 3, stout, 

 recurved, slightly united below, about equaling the ovary. Fruit dry, dehiscent, 

 3-celled, glabrous, about 1 cm. in diameter, the valves somewhat twisted in 

 dehiscence, the seed globose, smooth, mottled, about 4 mm. in diameter. 



(138 Barnes) January; (112, 1137 Whitford) May, March; (1358, 1359, 2749, 

 2934 Borden) July, March; (2768 Meyer) February; (2529, 3189 Merrill) June, 

 October; (6001 Leiberg) July. In forests 300 to 1,000 m. 



27. HOMALANTHUS Juss. 



1. H. populneus (Geisel.) Pax in Engl, und Prantl. Nat. Pflanzenfani. 3 

 (1890) 5: 96. 



(478, 1281 Whitford) July, May; (1209 Borden) June. In open forests 100 

 to 500 m. Malaya. 



28. SAPIUM P. Br. 



2. Sapium lateriflorum Merrill, sp. nov. 



A tree reaching a height of 25 m., monoecious. Branches usually slender, 

 brown or gray, glabrous. Leaves alternate, elliptical ovate to elliptical oblong, 

 coriaceous, glabrous, entire, slightly shining, 7 to 14 cm. long, 3 to 6 cm. wide, the 

 apex short, abruptly acuminate, the base acute, slightly glandular auriculate; pri- 

 mary nerves 6 to 7 each side of the midrib, distant, curved, not prominent, the 

 reticulations lax, ratlier obscure; petioles 1 to 3 cm. long, glabrous. Inflorescence 

 lateral, axillary or extra-axillary, in simple or paniculate spikes or • spicate 

 racemes, glabrous, 3 to 8 cm. long, the staminate flowers above numerous, the 

 pistillate below in the same inflorescence, few, pedicellate, the basal portion of 

 the racemes often with numerous, small imbricated bracts. Staminate flowers 

 yellow, sessile or jaedicelled, fasciculate, the subtending bracts rugose, ovate, 

 acuminate, about 1.5 mm. long, 2 to 4 or 5 flowers in each bract. Sepals 2, 

 broadly ovate, acute or obtuse, about 1.5 mm. long. Stamens 2; filaments stout, 

 about 1 mm. long; anthers 2-celled, broadly ovoid or subglobose, about 0.8 mm. 

 long. Disk and petals none. Pistillate flowers few, solitary, pedicelled, at the base 

 of the staminate spike or on branches from the base of the inflorescence. Calyx 

 of the male. Ovary ovoid, glabrous, 2-celled, each cell 1-ovuled. Styles 2, entire, 

 stout, recurved, about I mm. long. Fruit subglobose to obovoid, baccate, glabrous, 

 inequilateral, 1-celled, 1-seeded, indehiscent, the peduncles 1.5 to 2 em. long, the 

 styles persistent. 



(2565 Borden) February; (338 Barnes) February. In forests 100 to 200 m. 

 The following specimens are the same: (1991 Ahern's collector) Bosoboso, Prov- 

 ince of Rizal, Luzon, November; (1080 Clarke) Island of Ticao, May. A species 

 diff"ering from typical Sapium in its lateral inflorescence. 



29. EUPHORBIA Linn. 



I. E. pilulifera Linn. Hook. f. Fl. Brit. Ind. 5 (1887) 250. 



(6021 Leiberg) July; (402 Whitford) June. A weed in waste places and open 

 lands below 100 m., widely distributed in the Philippines. Tropical and sub- 

 tropical regions generally. 



