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 fine, 

 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-eelled 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 erustaceous, 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. 5900 (type), 599 k Cur ran, January, 

 1907, with staminate flowers and fruit, For. Bur. 379, 917 Maulc, March, June, 

 1904, the former with pistillate flowers, the latter with fruit; Merrill 2934, 

 Hallier s. n.: Province of Tayabas (Principe), Baler, Merrill 100G. Common 

 names given in Zambales are Mala usa, Dalinias, Hinting dahtpa, and Ptdiai) ; 

 in Baler Ngcrct. 



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 Osmclia with but four known species, two 

 closely allied ones confined to the Philippines, one in Celebes, and one in Ceylon; 

 and the genus Trichadcnia, previdusly a monotypic one and confined to Ceylon, 

 but of which a second species has now been found in Luzon. 



TRICHADENIA Thwaites. 



Trichadenia philippinensis sp. nov. 



Arbor dioiea, subglabra, 15 ad 20 m alta; foliis longe petiolatis, coria- 

 ceis vel subcoriaceis, elliptico-oblongis vol oblongis, nitidis, glabris, 14 

 ad 30 cm longis, integris vel supra obscure repandis, acuminatis, basi 

 rotimdatis; nervis utrinque 10 ad 12, prominentibus ; racemis axilla- 

 ribus, solitariis, usque ad 10 cm longis, ferrugineo-puberulis. calycibus 

 irregulariter 2- vel 3-lobatis. 



