298 
MERRILL. 
obtuse ; nerves 5 on each side of the midrib, prominent, sharply ascend- 
ing, slightly curved, obscurely anastomosing, usually brown when dry in 
contrast to the pale lower surface of the leaf, the reticulations tine, 
distinct ; petioles 5 to 10 mm long, often slightly pubescent. Flowers 
small, 5-merous, the pistillate ones solitary, axillary, on 3 to 4 mm long 
pedicels; sepals free, imbricate, ovate, 2 to 4.5 mm long, the inner two 
much larger than the outer ones, pubescent; petals suborbicular, 3 mm 
in diameter, membranaceous, rounded, ciliate; ovary ovoid, 2 mm in 
diameter, densely pubescent, 1 -celled with three parietal placentae, the 
ovules numerous ; stigmas 3, spreading, flattened, 2 mm long. Staminate 
flowers small, in very short paniculate racemes, the inflorescence slightly 
pubescent, axillary, solitary, about as long as the petioles; sepals 5, 
free, ovate, acute or acuminate, the two inner ones larger than the outer, 
about 3 mm long in bud, outside ferruginous-pubescent; petals 5, ovate 
or rounded, membranaceous, ciliate, each with a large orbicular, ciliate 
scale at the base, about 1 mm in diameter ; rudimentary ovary none ; 
stamens 5; filaments stout, tapering upwards, 1 mm long, glabrous; 
anthers 1 mm long, about 0.6 mm long, the connective rather broad. 
Fruit pyriform, indehiscent, the pericarp crustaceous, rather brittle when 
dry, densely brown- or ferruginous-pubescent, when mature about 6 
cm long, the base much narrowed; seeds about 8 in each fruit, ellipsoid 
to narrowly ovoid, often irregularly compressed, 1.5 to 2 cm long. 
Luzon, Province of Zambales, For. Bur. 5906 (type), 5994 Curran, January, 
1907, with staminate flowers and fruit, For. Bur. 379, 91 7 Maule, March, June, 
1904, the former with pistillate flowers, the latter with fruit; Merrill 2934, 
Hallier s. n.: Province of Tayabas (Principe), Baler, Merrill 1006. Common 
names given in Zambales are Mala usa, Dalinias, Binting dalaga, and Pu.tian ; 
in Baler Ngeret. 
This species is closely allied to H. venenata Gaertn. of Ceylon, but differs in 
its less numerously nerved and entire leaves, and in its fruit being strongly 
narrowed at the base, and pyriform in shape. 
Although the Ceylon flora is not especially closely allied to that of the Philip- 
pines, and although the Flacourtiaceae is not strongly represented in either region, 
this family contains a striking series of species peculiar to the two, including 
the above which is manifestly closely allied to Hydnocarpus venenata Gaertn., a 
species confined to Ceylon; the genus Osmelia with but four known species, two 
closely allied ones confined to the Philippines, one in Celebes, and one in Ceylon; 
and the genus Trichadenia, previously a monotypic one and confined to Ceylon, 
but of which a second species has now been found in Luzon. 
TRICHADENIA Thwaites. 
Trichadenia ph il ipp inensis sp. nov. 
Arbor dioica, subglabra, 15 ad 20 m alta; foliis longe petiolatis, coria- 
ceis vel subcoriaceis, elliptico-oblongis vel oblongis, nitidis, glabris, 14 
ad 30 cm longis, integris vel supra obscure repandis, acuminatis, basi 
rotundatis; nervis utrinque 10 ad 12, prominentibus ; racemis axilla- 
ribus, solitariis, usque ad 10 cm longis, ferrugineo-puberulis, calycibus 
irregulariter 2- vel 3-lobatis. 
