PHILIPPINE PLANTS, IX. 311 



setose, spreading hairs 5 mm long or less. Leaves oblong, when 

 fresh dark-green on the upper surface and often blotched with 

 gray, the lower surface deep red, chartaceous or membranaceous, 

 15 to 20 cm long, 6 to 7 cm wide, not narrowed at the base but 

 very strongly obliquely cordate, the broad lobe rounded, the 

 narrow one subacute or obtuse, the apex rather slenderly acumi- 

 nate, margins shallowly, distantly, and irregularly sinuate-toothed 

 or lobed, ciliate-denticulate, the upper surface glabrous, the 

 lower one brownish-pubescent and ciliate-setose on the nerves; 

 basal nerves radiate, about 8, prominent; petioles prominently 

 ciliate-setose with long hairs, 1 to 3 cm long; inflorescence ax- 

 illary, few-flowered, 4 cm long or less, sparingly branched. Male 

 flowers : Sepals 2, ovate, obtuse, about 8 mm long. Petals none. 

 Stamens about 30; anthers narrowly oblong-obovate, obtuse, 2 

 mm long, the filaments very short or none. Bracteoles lanceolate, 

 acuminate, 3 mm long, deciduous. Female flowers on separate 

 plants. Sepals 5, thin, reticulate, broadly lanceolate to ovate- 

 lanceolate, acuminate, at anthesis about 8 mm long, 4 to 5 mm 

 wide, accrescent and up to 13 mm long before falling. Styles 

 2 mm long; stigmas forked, spirally twisted, about 2 mm long. 

 Mature capsules 2 to 2.5 cm long, about 2 cm wide, truncate at 

 the apex, the outer upper angles acute, subequally 3-winged, one 

 wing rounded and broader at its base than are the other two 

 which are narrowed and acute at the base. 



Luzon, Province of Nueva Vizcaya, Dupax, Bur. Sci. 11 334. McGregor, 

 March, 1912, in forests along small streams. 



This distinct species is probably most closely allied to Begonia cumingii 

 A. Gray, from which it is at once distinguished by its long and slender 

 ciliate-setose hairs and by its small male flowers. It somewhat resembles 

 Begonia crispipila Elmer, but lacks the prominently bracteate inflorescence 

 of that species, and has very different capsules. 



BEGONIA QUERCI FOLIA A. DC. in Ann. Sci. Nat. IV 11 (1859) 129, 

 Prodr. 15* (1864) 320; F.-Vill. Novis. App. (1880) 99; Vid. Phan. 

 Cuming. Philip. (1885) 116, Rev. PI. Vase. Filip. (1886) 143. 

 Begonia leytensis Elm. Leafl. Philip. Bot. 2 (1910) 739; Merr, in 

 Philip. Journ. Sci. 6 (1911) Bot. 384. 



This species was wrongly interpreted by me in my recent paper of Philip- 

 pine Begonia^, for all the recently collected material I rather tentatively 

 referred to DeCandolle's species, represents a quite different form. After 

 a careful study of the available material and the descriptions I am confident 

 that Begonia leytensis Elm. is an exact synonym of B. quercifolia A. DC, 

 and it is accordingly here reduced. So far as known B. quercifolia A. DC. 



" This Journal 6 (1911) Bot. 387. 



