40 The Philippine Journal of Science ms 
terete, 3 to 4 mm in diameter, ferruginous-hirsute, the younger 
branchlets rather densely ferruginous-hirsute as are the short 
petioles and nerves on the lower surface of the leaves. Leaves 
membranaceous, brown when dry, the lower surface paler than 
the upper, in general obovate, inequilateral, 7 to 9 cm long, 
3.5 to 5.5 cm wide, apex acuminate, base narrowed and obliquely 
cordate, the wider lobe rounded the other acute, the margins 
irregularly and coarsely dentate-lobed and denticulate; lateral 
nerves 4 or 5 on each side of the midrib, prominent ; petioles 4 
to 10 mm long; stipules membranaceous, 1 cm long or less. 
Inflorescences terminal, 3 to 5 cm long, few-flowered, the basal 
flower pistillate, the others staminate, the bracts membranaceous, 
oblong, acuminate, nearly 1 cm long. Pistillate flowers 5-merous, 
the sepals broadly ovate, obtuse, about 13 mm long. Staminate 
flowers white, the sepals 2, similar to those of the pistillate 
flowers, the stamens numerous, crowded on an elongated axis 
about 5 mm in length. Capsules equally 3-winged, about 2 cm 
long and wide, apex truncate, narrowed below to the subacute 
base, the wings submembranaceous. 
Luzon, Apayao Subprovince, Mount Sulu, Bur. Sci. 28^03 Fenix, May 
22, 1917, on rocky shaded slopes, altitude about 1,000 meters. 
This species resembles Begonia brevipes to which it is perhaps most 
closely allied. It is distinguished especially by its somewhat larger size, 
denser indumentum, and very much larger flowers and capsules. 
BEGONIA BINUANGENSIS sp. nov. 
Species B. wenzelii Merr. affinis, differt foliis majoribus, usque 
ad 8 cm longis, petiolis longioribus, capsulis turbinatis, 1.5 cm 
longis et 2 cm latis. Herba scandens, ramosa, glabra, inter- 
nodiis 1.5 ad 3.5 cm longis, ramis teretibus, circiter 4 mm diam- 
etro; foliis membranaceis, oblongis ad oblongo-lanceolatis, basi 
rotundatis vel obtusis, apice acuminatis, margins irregulariter 
serrato-dentatis ; sepalis $ orbicularibus, circiter 1 cm diametro ; 
capsulis inaequaliter 3-alatis, apice truncatis, deorsum angus- 
tatis. 
A scandent, glabrous, branched herb, rooting at some of the 
nodes, the stems and main branches terete, about 4 mm thick, 
brown, the branchlets more slender, the internodes 1.5 to 3 cm 
long. Leaves when dry membranaceous, olivaceous, somewhat 
shining, oblong to oblong-lanceolate, 5 to 8 cm long, 2 to 3 cm 
wide, somewhat inequilateral, base rounded or obtuse, narrowed 
above to the acuminate apex, margins irregularly serrate-dentate, 
the basal nerves 5 or 7, slender, ascending; petioles 1 to 3 cm 
long. Inflorescences terminal or in the uppermost axils, 3 to 4 
cm long, few-flowered. Staminate flowers white, the sepals 2, 
