308 MERRILL. 
or obtuse, base narrowed, acute; lateral nerves very obscure, 
about 10 on each side of the midrib, the lower surface marked 
with slender, more or less undulate, not prominent, longitudinal, 
purplish lines ; petioles 2 to 3 mm long. Flowers fascicled at the 
thickened nodes, axillary, sessile, mostly in the axils of fallen 
leaves, 4-merous. Male flowers : Sepals 4, orbicular, rounded, 2 
mm in diameter. Petals oblong, in mature bud 3 to 3.5 mm long, 
thick. Stamens 14, obscurely 2-seriate, covering the slightly 
raised torus, oblong-obovate, about 1.2 mm long, the anthers 
opening by introrse slits. Rudimentary ovary none. 
Luzon, Province of Cagayan, Abulug River, Bur. ScL 13919 Ramos, Jan- 
uary, 1912, in forests on slopes. 
A species well characterized by its small leaves with the faint, longitu- 
dinal, purplish lines on the under surface. 
BEGONIACEAE. 
BEGONIA L, 
BEGONIA AFFINIS sp. nov. § Petermannia. 
Species B. agusanensis valde affinis differt ramulis dense longe 
ciliato-setosis, capsulis majoribus, circiter 1.5 cm longis. 
An erect, somewhat branched, suffrutescent herb 50 cm high 
or less, the stems sparingly long-ciliate, the branchlets densely 
covered with long, brown, ciliate hairs. Leaves glabrous, mem- 
branaceous, inequilaterally oblong-obovate to oblong-oblanceolate, 
rarely merely oblong, 9 to 15 cm long, 1.5 to 3.5 cm wide, apex 
slenderly acuminate, gradually narrowed below the middle to the 
rather narrow, laterally cordate base, the margins irregularly 
and rather coarsely toothed above the middle, the lower one- 
half entire or subentire, the base usually less than 1 cm wide, 
one side rounded, the narrower side acute; petioles prominently 
ciliate, about 3 mm long ; stipules oblong-lanceolate, with a long 
and slender, ciliate, flagellate acumen. Panicles terminal, gla- 
brous, 4 to 7 cm long, the peduncles slender, the branches 
dichotomous, few, slender; bracts lanceolate, acuminate, 5 to 
7 mm long, the bracteoles similar, smaller. Flowers pink. Male 
flowers: Pedicels 4 to 5 mm long. Sepals 2, elliptic, obtuse, 
about 6 mm long, 3 to 3.5 mm wide, 6-nerved. Petals 2, oblong, 
obtuse, 4 to 5 mm long, 1.5 to 2 mm wide. Stamens about 25; 
anthers oblong-obovoid, retuse, 1.5 mm long, the filaments 
shorter. Female flowers solitary at the base of the male panicle, 
their pedicels slender, 1 to 1.5 cm long. Perianth segments 5, 
the outer two oblong-elliptic, somewhat narrowed to the obtuse 
apex, about 12 mm long, 5 to 5.5 mm wide, slenderly 9-nerved, 
