428 ^^^6 Philippine Journal of Science i9i9 



well as by its very slender, greatly elongated rhizomes; the 

 internodes vary from 1 to 3 cm in length. 



BEGONIA PANAYENS<S sp. nov. § Petermannia. 



Herba sufFruticosa, erecta, ramosa, glabra, circiter 1.5 m alta; 

 foliis in siccitate membranaceis, nitidis, oblongis, usque ad 20 cm 

 longis, inaequilateralibus, apice angustatis, tenuiter acuminatis, 

 basi rotundatis, baud cordatis, margine distanter et irregulariter 

 dentatis; inflorescentiis terminalibus, cymoso-paniculatis, usque 

 ad 17 cm longis ; floribus $ numerosis, circiter 1,5 cm diametro ; 

 sepalis orbicularis, 7 ad 8 mm diametro; petalis 0; capsulis 

 ellipticis vel obovato-ellipticis, circiter 2.5 cm longis et 2 cm 

 latis, aequaliter 3-alatis, apice truncato-rotundatis, basi vix an- 

 gustatis, rotundatis. 



An erect, branched, glabrous, suffrutescent herb, about 1.5 

 m high, the stems and branches stout. Leaves when dry mem- 

 branaceous, shining, inequilateral, oblong, 16 to 20 cm long, 

 4 to 6 cm wide, narrowed upward to the slenderly acuminate 

 apex and somewhat narrowed below to the rounded base, or the 

 narrower side of the lamina acute and the broader side rounded, 

 not at all cordate, margins distantly and irregularly dentate, 

 or that of the narrower side often nearly entire except near 

 the apex; nerves prominent, ascending; petioles stout, 1 to 1.5 

 cm long; stipules membranaceous, oblong to oblong-lanceolate, 

 acuminate, 1.5 to 2 cm long. Inflorescences terminal, cymose- 

 paniculate, up to 17 cm in length, the staminate flowers numer- 

 ous, the pistillate flowers apparently few and only at the base 

 of the inflorescence, none present on the type, but represented 

 by mature capsules. Staminate flowers pink, about 1.5 cm in 

 diameter. Sepals orbicular, 7 to 8 mm in diameter. Petals 

 none. Stamens about 35, the anthers narrowly oblong to oblong- 

 obovoid, 1.2 to 1.5 mm long, longer than the filaments. Cap- 

 sules one or two at the base of the inflorescence, including the 

 three equal wings about 2.5 cm long, 2 cm wide, elliptic to 

 obovate-elliptic, apex rounded-truncate, base scarcely narrowed, 

 usually rounded; pedicels 1.5 to 2 cm long. 



Panay, Antique Province, Culasi, Bur. Sci. 32309 McGregor, 

 June 8, 1918, in forests along cool mountain streams, altitude 

 about 250 meters. 



This unusually robust species is manifestly allied to Begonia 

 longistipula Merr., from which it is distinguished by its larger 

 leaves and flowers and by its much larger, differently shaped 

 capsules. 



