40 The Philippine Journal of Science i»i8 



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. Set. 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, margine 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, 



