50 The Philippine Journal of Science ms 
stipules lanceolate, 6 mm long, 1.8 mm wide below, long and 
slenderly aristate-acuminate. Inflorescence paniculate, terminal 
or in the uppermost axil, lax, 4 cm long or less, the branches 
few, slender. Flowers few, the staminate ones with 2, broadly 
ovate, subacute or obtuse, not rounded, sepals 3 mm in length. 
Petals none. Stamens about 20. Anthers broadly obovoid, 
rounded, 0.6 mm long. Female flowers apparently solitary at 
the base of the staminate panicle, the sepals lanceolate, acumi- 
nate or acute, 4 mm long, 1.2 to 1.5 mm wide. Stigmas 3, about 
1 mm long, spirally twisted. Capsules not seen, but from the 
female flowers (in anthesis) apparently equally 3-winged. 
Basilan, Cumalarang River, in forests, Bur. Sci. 16111 Reillo, August 
30 , 1912 . 
A rather striking species, distinguishable by its lanceolate, very slen- 
derly acuminate, more or less lacerate-lobed leaves which are narrowed 
to the subequilateral acute or obtuse bases. It is manifestly allied to 
Begonia lancifolia Merr., but can be readily distinguished by its smaller, 
more narrowly lobed leaves, shorter petioles and stipules, subacute or 
obtuse sepals of the male flowers and fewer shorter anthers. 
BEGONIA OLIGANTHA sp. nov. § Petermannia. 
Herba erecta, parce ramosa, glabra, circiter 30 cm alta ; foliis 
oblongis, vel anguste oblongo-obovatis, membranaceis, usque ad 
7 cm longis, sinuato-dentatis, acuminatis, deorsum angustatis, 
leviter inequilateralibus, basi minute oblique subauriculatis ; in- 
florescentiis terminalibus, paucifloris, floribus $ circiter 18 mm 
diametro, sepalis 2, late ovatis, petalis 2, oblanceolatis ; capsulis 
1.3 cm longis, aequaliter 3-alatis, basi rotundatis, apice truncatis. 
An erect herb, glabrous throughout, about 30 cm high, spar- 
ingly branched, the stems and branches reddish-brown when 
dry. Leaves membranaceous when dry, green, oblong to nar- 
rowly oblong-obovate, 5 to 7 cm long, 1 to 2 cm wide, slightly 
falcate, narrowed below to the slightly inequilateral, obtuse, 
obliquely subauriculate base, and above to the slenderly acumi- 
nate apex, the margins distantly and irregularly sinuate- 
toothed; petioles 2 to 7 mm long; stipules narrowly lanceolate, 
long and slenderly acuminate, about 12 mm long, 1.5 mm wide. 
Inflorescence terminal or in the uppermost axil, paniculate, 5 to 
7 cm long, the branches very few, few-flowered, slender. Male 
flowers: Sepals 2, broadly ovate, 9 to 10 mm long, about 6 mm 
wide, obtuse or narrowly rounded. Petals 2, oblanceolate, ob- 
tuse, 8 mm long, 2 mm wide. Stamens about 20, inserted on 
the elongated torus; anthers narrowly obovoid, rounded, base 
acute, 1.5 mm long. Pistillate flowers apparently solitary at 
the base of each panicle. Capsules 1.3 cm long, 1 to 1.5 cm 
