X. c, 1 Merrill: New or Noteworthy Philippine Plants, XI 47 



cm wide, chartaceous, the apex abruptly short-acuminate, the 

 base scarcely narrowed, one side much narrower then the other, 

 acute, the broader side very broadly rounded, forming a shallow, 

 wide sinus with the petiole, the margins irregularly and rather 

 coarsely toothed, not at all lobed, the primary teeth very broad, 

 short, acute, the shallow sinuses denticulate ; upper surface glab- 

 rous, subolivaceous when dry, slightly shining, the lower surface 

 much paler, glabrous except for the slightly subfurfuraceous 

 nerves ; nerves prominent, nearly straight, forked, the basal ones 

 usually 9, of which 2, sometimes 3, are on the narrower side of 

 the lamina, the lateral nerves above the base 2 on the narrower 

 side, 3 on the broader side, ascending, the reticulations lax, in- 

 distinct; petioles 3.5 to 5.5 cm long, when young somewhat 

 brown-f urf uraceous ; stipules 2 cm long. Staminate and pis- 

 tillate flowers in different inflorescences on the same plant. Sta- 

 minate inflorescence terminal, lax, divaricately branched, up to 

 10 cm long, few-flowered. Flowers pink or white. Sepals 2, 

 orbicular, about 5 mm in diameter.* Petals none. Stamens about 

 30; anthers ellipsoid, about 1 mm long, equaling the filaments. 

 Pistillate inflorescence axillary and terminal, few-flowered, 5 cm 

 long or less, each flower subtended by 2, deciduous, oblong- 

 elliptic, acute or obtuse, membranaceous bracts. Sepals 5, nar- 

 rowly elliptic, narrowed at both ends, acute, about 1.3 em long. 

 Mature capsules, including the wings, turbinate, about 2 cm long, 

 2.5 cm wide, subequally 3-winged, the apex truncate, the upper 

 outer corners of the wings rounded, the base broadly rounded. 



Luzon, Province of Nueva Vizcaya, near Imugan, Bur. Sci. 2007 U 

 McGregor, January, 1912. 



In comparison with Begonia cumingii A. Gray (B. philippinensis A. 

 DC), to which the species is manifestly allied, the striking differences 

 are in the small staminate flowers and the relatively broad, nearly glabrous 

 leaves of the present species. 



BEGONIA MEGALANTHA sp. nov. § Petermannia. 



Species B. merrittii affinis, diflfert ramulis et subtus foliis ad 

 nervos prominente pubescentibus, foliis subintegris vel leviter 

 dentatis, vix lobatis, petiolo brevioribus, floribus majoribus, pe- 

 talis usque ad 2.5 cm longis. 



An erect, branched shrub 1 to 2 m high, the stems very woody, 

 stout. Branches and branchlets more or less zig-zag, prom- 

 inently pubescent with short, more or less crisped, pale-brown 

 hairs. Leaves inequilateral, oblong, chartaceous, 5 to 10 cm long, 

 1.8 to 4 cm wide, the upper surface brownish or olivaceous, 

 slightly shining, the lower surface paler, densely puncticulate, 

 glabrous except the midrib and nerves which are prominently 



