PHILIPPINE SPECIES OF BEGONIA. 
403 
the sinus rather narrow, acute, 1 to 1.5 cm deep, both lobes rounded, 
one much boader than the other, not superposed, apex prominently and 
sharply acuminate, the acumen usually about 1.5 cm long, margins dis- 
tinctly distantly and irregularly crenate-dentate, frequently also with 
few, small lobes which are broader than long, the upper surface, at least 
when young, with scattered, long, brown hairs, ultimately becoming nearly 
glabrous, on the lower surface similar hairs more numerous and per- 
sistent, the margins prominently ciliate with long brown hairs; base 
palmately 7- to 9-nerved; petiole 5 to 20 cm long, distinctly villous with 
long, slender, brown hairs. Peduncles as long as or exceeding the leaves, 
with few to many long, ciliate, brown hairs, dichotomously branched at 
the apex, the branched part of the inflorescence about 5 cm long, rather few- 
flowered. Flowers white, the staminate ones about 2.5 cm in diameter, 
the slender pedicels 2 cm in length. Sepals 2, broadly elliptic, rounded 
at both ends, about 12 mm long, 10 mm wide, with about 13 slender 
nerves. Petals 2, thinner than the sepals, narrowly obovate, 10 to 11 
mm long, about 7 mm wide, the apex rounded and prominently retuse, 
the base gradually narrowed. Stamens about 30; filaments 2 mm long; 
anthers slightly exceeding 1 mm in length. Pistillate flowers : Sepals 
and petals not seen: Styles 3-cleft, about 3 mm long, the arms 2- or 
3-forked, the stigmas spirally arranged. Capsules about 12 mm long, 
13 to 14 mm wide, unequally 3-winged, the wings all rounded, the 
broad one 6 mm wide, the two narrower ones one-half as wide, all dis- 
tinctly exceeding the capsule, reticulate, the apex broadly rounded, the 
base abruptly and obscurely acuminate. Placentas 2-partite. 
Luzon, District of Lepanto, Sagada, For. Bur. 5677 Elemme, (type), November 
8, 1906, on boulders in moist forests, altitude about 1,600 m: Province of Benguet, 
Baguio, Williams 1318, September 24, 1904. 
A species manifestly allied to Begonia trichocheila Warb., and to B. longo- 
villosa A. DC., differing from the former in its prominently and sharply acuminate 
leaves which are more or less toothed, not entire, and distinctly villous on both 
surfaces with long, brown hairs, and from the latter in its differently shaped 
stipules, quite differently shaped leaves, longer petioles, and other characters. 
52. Begonia luzonensis Warb. in Perk. Frag. FI. Philip. (1904) 52. 
Luzon, Province of Rizal, Montalban, Warburg 13084, type in .herb. Berol. ! : 
Province of Laguna, Pagsanjan, Merrill 2187 ; Mabalucbaluc Pass, Bur. Sci. 6045 
Robinson, March, 1908: Province of Bataan, Mount Mariveles, Merrill 3734, 
January, 1904, Elmer 6849, November, 1904. 
As noted under Begonia manillensis A. DC., I am disposed to refer to this 
species the specimen collected in Luzon by Lobb, and referred with doubt by 
A. DeCandolle to Begonia manillensis. 
Endemic. 
53. Begonia vanoverberghii sp. nov. 
Planta succulenta, petiolis, pedunculis, et foliis utrih.qu.ie plus minus 
longe brunneo-ciliato-setosis ; foliis usque ad 20 cm longis, ovatis vel 
obloogo-ovatis, valde inequilateralibus, basi oblique cordatis, apice. longe 
