140 
The Philippine Journal of Science 
1916 
Negros, Barlin, For. Bur. 11217 Everett, April 21, 1908, reaching the 
tops of tall trees, growing at an altitude of about 90 meters, locally known 
as langingi. 
Well characterized by its ample, long-petioled, pedately 5- or 7-foliolate 
leaves, its coarsely sinuate-serrate leaflets, its long-peduncled, pubescent 
inflorescence, and its relatively large flowers. It resembles Tetrastigma 
magnum Merr., of Luzon, but differs, among other characters, in its 
pubescent inflorescence. 
TETRASTIGMA LAXUM sp. nov. 
Frutex glaber scandens, ramis ramulisque teretibus ; foliis pal- 
matim 3-foliolatis, foliolis coriaceis, in siccitate brunneis, ellip- 
ticis vel ovato-ellipticis, 4 ad 7 cm longis, utrinque subaequaliter 
angustatis, basi acutis, apice acute acuminatis apiculatisque, 
margine supra denticulatis ; inflorescentiis oppositifoliis, laxis, 
circiter 10 cm longis, longe pedunculatis, divaricato ramosis; 
floribus $ 4-meris, in ramulis ultimis umbellatis, petalis glabris, 
2 mm longis, apiculato-acuminatis. 
A scandent, entirely glabrous vine reaching a length of 
20 m and a diameter of 12 cm, the branches and branchlets 
slender, terete, brown, the branches sparingly lenticellate. Ten- 
drils not seen. Leaves palmately 3-foliolate, their petioles 1.5 
to 3 cm long; leaflets coriaceous, dark-brown when dry, slightly 
shining, the lower surface a little paler than the upper, elliptic 
to ovate-elliptic, subequally narrowed at both ends, 4 to 7 cm 
long, 1.5 to 3 cm wide, the base acute, the apex rather promi- 
nently and sharply acuminate, the acumen apiculate, the margins 
in the upper one-half distantly and minutely denticulate; lateral 
nerves 4 or 5 on each side of the midrib, very obscure, the reti- 
culations obsolete ; petiolules 6 to 15 mm long, those of the lateral 
leaflets usually shorter than that of the middle one. Inflores- 
cence slender, axillary, about 10 cm long, often wider than 
long, slenderly peduncled, divaricately branched above the mid- 
dle, lax, many-flowered, the flowers umbellately disposed on the 
ultimate branchlets, 3 to 5 in each umbel, their pedicels 2 to 
3 mm long. Male flowers: Calyx subtruncate or obscurely 4- 
toothed ; petals 4, spreading, oblong, 2 mm long, distinctly cucul- 
late at the apex, quite glabrous, not corniculate, but the apex 
apiculate-acuminate ; filaments slender, 1 mm long; anthers 
about 0.2 mm long, broader than long; disk prominent, glabrous, 
obscurely 4-lobed. Female flowers and fruits not seen. 
Luzon, Province of Bataan, Lamao River, For. Bur. 2495 Borden 
(type), For. Bur. 2510 Meyer, January, 1905, climbing on large trees in 
dry forests and thickets, altitude 30 to 60 meters; the flowers fragrant, 
pale-green. 
A species well characterized by its 3-foliolate leaves, the leaflets dark- 
