308 MERRILL. 



or obtuse, base narrowed, acute; lateral nerves very obscure, 

 about 10 on each side of the midrib, the lower surface marked 

 with slender, more or less undulate, not prominent, longitudinal, 

 purplish lines ; petioles 2 to 3 mm long. Flowers fascicled at the 

 thickened nodes, axillary, sessile, mostly in the axils of fallen 

 leaves, 4-merous. Male flowers: Sepals 4, orbicular, rounded, 2 

 mm in diameter. Petals oblong, in mature bud 3 to 3.5 mm long, 

 thick. Stamens 14, obscurely 2-seriate, covering the slightly 

 raised torus, oblong-obovate, about 1.2 mm long, the anthers 

 opening by introrse slits. Rudimentary ovary none. 



Luzon, Province of Cagayan, Abulug River, Bur. Sci. 13919 Ramos, Jan- 

 uary, 1912, in forests on slopes. 



A species well characterized by its small leaves with the faint, longitu- 

 dinal, purplish lines on the under surface. 



BEGONIACEAE. 



BEGONIA L. 

 BEGONIA AFFINIS sp. nov. § Petermannia. 



Species B. agusanensis valde afRnis differt ramulis dense longe 

 ciliato-setosis, capsulis majoribus, circiter 1.5 cm longis. 



An erect, somewhat branched, suffrutescent herb 50 cm high 

 or less, the stems sparingly long-ciliate, the branchlets densely 

 covered with long, brown, ciliate hairs. Leaves glabrous, mem- 

 branaceous, inequilaterally oblong-obovate to oblong-oblanceolate, 

 rarely merely oblong, 9 to 15 cm long, 1.5 to 3.5 cm wide, apex 

 slenderly acuminate, gradually narrowed below the middle to the 

 rather narrow, laterally cordate base, the margins irregularly 

 and rather coarsely toothed above the middle, the lower one- 

 half entire or subentire, the base usually less than 1 cm wide, 

 one side rounded, the narrower side acute; petioles prominently 

 ciliate, about 3 mm long; stipules oblong-lanceolate, with a long 

 and slender, ciliate, flagellate acumen. Panicles terminal, gla- 

 brous, 4 to 7 cm long, the peduncles slender, the branches 

 dichotomous, few, slender; bracts lanceolate, acuminate, 5 to 

 7 mm long, the bracteoles similar, smaller. Flowers pink. Male 

 flowers: Pedicels 4 to 5 mm long. Sepals 2, elliptic, obtuse, 

 about 6 mm long, 3 to 3.5 mm wide, 6-nerved. Petals 2, oblong, 

 obtuse, 4 to 5 mm long, 1.5 to 2 mm wide. Stamens about 25; 

 anthers oblong-obovoid, retuse, 1.5 mm long, the filaments 

 shorter. Female flowers solitary at the base of the male panicle, 

 their pedicels slender, 1 to 1.5 cm long. Perianth segments 5, 

 the outer two oblong-elliptic, somewhat narrowed to the obtuse 

 apex, about 12 mm long, 5 to 5.5 mm wide, slenderly 9-nerved, 



