PHILIPPINE SPECIES OF BEGONIA. 
37,5 
Luzon, Province of Cagayan, Pamplona, Bur. Sci. 7 If 32 Ramos: Benguet 
Subprovince, Sablan, Bur. Sci. 12661 Fenix : Province of Pampanga, Mount Abu, 
Bur. Sci. 2008 Foxworthy: Province of Laguna, Calauan, Gallery in Herb. Mus. 
Paris, (type of Begonia salaziensis var. aalleryana A. DC.) ; Province, of Bataan, 
Lamao River, Williams 532 : Province of Tayabas, Atimonan, Merrill lf009. 
Polillo, Bur. Sci. 6903 Rohinson. Mindoko, Alag River, Merrill 991; Mount 
Burburangan, For. Bur. 8521 Merritt. Mindanao, Province of Surigao, Bolster 
2Jf7, Allen 159 ; District of Lanao, Mrs. Clemens s. n. Jolo, Mount Dajo, Merrill 
>329. 
The only species of the section known from the Philippines, extending from 
northern Luzon to Mindanao and the Sulu Archipelago. According to Warburg 
it is closely allied to Begonia heteroclinis Miq., of northeastern Celebes. 
I am indebted to Dr. F. Gagnepain of the Museum of Natural History, Paris, 
for a sketch of the type specimen of Begonia salaziensis var. calleryana ; the 
specimen is fragmentary, but is unquestionably identical with Warburg’s Begonia 
pseudo-lateralis. 
Endemic. 
§ Petermannia. 
2. Begonia robinsonii sp. nov. 
Suffruticosa, erecta, circiter 80 cm alta, pauce ramosa, partibus junior- 
ibus subtus foliis ad nervos plus minus breviter brunneo-pubeseentibus ; 
foliis valde inequilateralibus, basi oblique cordatis, apice aeuminatis, 
margine denticulatis et leviter, distanter, breviter lobatis, palmatinerviis ; 
inflorescentiis axillaribus, quam petiolus multo brevioribus ; floribus in 
apice pedunculorum solitariis vel paucis, bracteis bracteolisque suffultis; 
capsulis circiter 2 cm longis. 
A suffrutescent, erect, slightly branched plant about 80 cm high. 
Stems terete, glabrous, not striate, 5 to 7 mm in diameter, dark-brown 
or nearly black when dry, the younger parts and petioles rather densely 
pubescent with dark-brown, short hairs. Leaves membranaceous or sub- 
membranaceous inequila.terally and obliquely oblong or oblong-ovate, 9 
to 13 cm long, 4 to 7 cm wide, the base strongly obliquely cordate, the 
broader lobe rounded, 2 to 3 cm wide, the narrower one obtuse, less than 
1 cm wide, the apex rather abruptly and slenderly acuminate, the acumen 
1 to 1.5 cm long, the margins irregularly dentate, and sometimes with 
from one to three, ovate, acute lobes, but these lobes never more than 1 
cm deep, the upper surface glabrous, dark-brown, somewhat shining, the 
lower much paler, the nerves brown-pubescent, the whole surface covered 
with numerous, small, whitish, lepidote-like spots; i nerves palmately 
arranged, about 12, distinct, mostly forked, brown, much darker than 
the other parts of the lower surface; petioles pubescent, about 2 cm 
long; stipules oblong, 1.5 cm long or less, abruptly apiculate-acuminate, 
brown, membranaceous,- glabrous or nearly so. Inflorescence, both stam- 
inate and pistillate, axillary, much shorter than the petioles, more or less 
pubescent. Staminate flowers, one to three, fasciculately arranged at 
the end of the short, solitary, about 4 mm long peduncle, each subtended 
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