58 G. King — Materials for a Flora of the Malayan Peninsula. [No. 1, 



Leaves glabrous : — 



Leaves broadly elliptic-ovate,eqaal-sided at the base 12. B. Herveyana. 



Leaves ovate-lanceolate, uneqaal-sided especially 



at the base ... ... ... ... 13. B. peralcensis. 



Leaves very oblique, ovate to reniform, obliquely cor- 

 date at the base : — 



Leaves glabrons even on the nerves : — 



Male flowers less than I in. across ... ... I4i. B. paupercula. 



Male flowers about 1-5 in. across ... ... 15. B. veimsta. 



Leaves glabrous, but the nerves hairy ; male flower 



2 in. across ... ... ... ... 16. i?. megapteroidea. 



Leaves with a few coarse compressed rusty-pubescent 

 hairs on both surfaces ; nerves beneath, petioles and 

 also peduncles rusty-pubescent; male flowers '8 in. 

 across . ... ... ... ... 17. B. Maxiuelliana. 



Upper surfaces of leaves papillose and bearing coarse 

 hairs : — 



Acaulescent ; petiole much longer than the lamina 18, B. praeclara. 



Stems 3 feet high ; petiole shorter than the blade 19. B. Lowiana. 



1. Begonia Forbesii, King n. sp. A small plant a few inclies 

 high with densely rusty- villose rhizome. Leaves rotund-ovate shortly 

 apiculate, sometimes blunt, the base slightly cordate, the edges subentire 

 or remotely denticulate ; upper surface glabrous : the lower with numer- 

 ous white scales and a few. coarse hairs on the nerves near their bases : 

 main-nerves 9, radiating from the base, inconspicuous ; length 1*25 to 

 225 in. ; breadth 1 to 2 in.; petiole 1*5 to 3 in.; stipules lanceolate, 

 villous externally, '3 in. long. Peduncles as long as or longer than the 

 leaves, slender, glabrous, bearing a solitary flower at the apex, or 

 2-branched and bearing 2 to 5 flowers ; bracts absent on the lower part 

 of the peduncle, in pairs in its upper part, small, obovate-oblong. 

 Flowers pink, their pedicels red. Male ; sepals 2, oblong, blunt, '15 in. 

 long ; petals 2, similar but smaller ; stamens numerous ; anthers obovate, 

 with emarginate apices, filaments short. Females ; perianth of 4 un- 

 equal pieces, the outermost rotund-ovate: the inner oblong. Styles 3, 

 thick, the stigmas large, flattened, rotund. Gapsule 3-celled, opening 

 on each face ; the wings subequal, spreading, triangular, blunt. 



Perak ; Wray 2476.— DiSTRiB. Sumatra, Forhes 2666. 



2. Begonia isoptera. Dry. in Smith's Ic. 43. Caulescent: three 

 feet high, nearly glabrous ; stem and branches slender. Leaves obliquely 

 ovate-oblong oi- ovate-lanceolate, shortly acuminate, the base cordate, 

 the sides very unequal ; edges remotely and usually coarsely dentate ; 

 upper surface of leaves quite glabrous, the lower minutely scaly ; main- 

 nerves mostly radiating from the base, branched, prominent; length 

 35 to 6 in.; breadth 1'5 to 3 in.; petioles slender, varyiug from "5 to 



