PHILIPPINE SPECIES OF BEGONIA. 
385 
If in the future it is definitely decided that the names cumingii and cumingiana 
can not be retained for the two distinct species, then the latter is the one that 
will need a new name, for Begonia cumingii A. Gray antedates by 10 years 
B. cumingiana A. DC. (as Begonia), although there is no doubt but that 
Petermannia cumingiana Klotzsch was published a few months earlier than 
Begonia cumingii A. Gray. The use of the name under Petermannia, however, 
has no bearing on the validity or nonvalidity of the specific name under Begonia. 
20. Begonia Ieucosticta Warb. in Perk. Frag. FI. Philip. (1904) 55. 
Luzon, Province of Isabela, Warburg 12004, type in herb. Berol. : Province 
of Benguet, Topping 92, January, 1902. Bucas (northeast of Mindanao), 
Merrill 5274, October, 1906. 
Endemic. 
21. Begonia negrosensis Elm. Leafl. Philip. Bot. 2 (1910) 736. 
Suffruticosa, erecta, ramosa, subglabra, 2 ad 3 m alta, caulibus usque 
ad r 2.5 cm crassis; foliis 10 ad 20 cm longis, ovato-oblongis, valde 
inaequilateralibus, basi valde oblique cordatis, apice acuminatis, mar- 
gine denticulatis, subtus ad nervos parce strigosis vel ubique glabris ; 
inflorescentiis usque ad 7 cm longis, paniculatis; floribus masculinis 
sepalis 2, orbicularibus, circiter 1.5 cm diametro, petalis nullis; cap- 
sulis triangulari-obovatis, 2 ad 2.3 cm longis, 3 ad 4 cm latis, apice 
truncatis, base acutis vel rotundatis. 
Negros, Cuernos Mountains, Elmer 9903 (type number), April, 1908; Canlaon 
Volcano,- Merrill 7 024, April, 1910, For. Bur. 13666 Curran, September, 1909. 
Endemic. 
22. Begonia halconensis sp. nov. 
Herba erecta parce ramosa, glabra, circiter 1 m alta; foliis chartaceis 
vel submembranaceis, usque ad 20 cm longis, oblique oblongis vel ob- 
longo-ovatis, valde tenuiter acute acuminatis, margine distanter dentatis 
et setosis, basi oblique cordatis, stipulis 1.5 ad 2 cm longis; inflores- 
centiis axillaribus, paucifloris, 3 ad 4 cm longis; floribus $ circiter 
2.5 cm diametro; capsulis turbinatis, apice truncatis,- basi acutis, 2 ad 
2.5 cm latis, inaequaliter 3-alatis. 
A stout, erect, glabrous, slightly branched herb about 1 m high, the 
stems near the base about 2 cm in diameter. Leaves chartaceous or 
submembranaceous inequilaterally oblong or ovate-oblong, 14 to 20 
cm long, 6 to 8 cm wide, somewhat shining when dry, slightly paler 
beneath, not lobed, the apex long and slenderly sharp-acuminate, the 
base strongly obliquely cordate, the lower lobe very broad, rounded, the 
upper one much narrower, rounded to subacute, the margins distantly 
and irregularly dentate and with intermixed, rather soft, straight or 
curved, setae-like teeth, similar ones also scattered on the more pro- 
minent nerves on the lower surface; basal nerves about 7, the primary 
lateral ones above the base 2 or 3 on each side of the midrib; petioles 
