400 
MERRILL. 
from Singapore, Borneo, or Java: see Merrill, This Journal 4 (1909) Bot. 149, 
sub Loranthus retusus Jack. 
The section Baryandxa A. DC., is based solely on Begonia oxysperma, but I 
can see no valid reason for making a section for this species distinct from 
Diploclinium. The specie’s is more robust than are the others of the section 
Diploclinium,' but in all essential characters appears to me to be quite referable 
to that section. Begonia oxysperma and B. calcicola are closely allied, and both 
have scattered, fimbriate-ciliate paleae, these being the only two Philippine 
species known to- me that possess this character. 
47. Begonia calcicola sp. nov. 
Herba, caulibus crassis, rhizomate stipulis magnis membranaceis 
brunneis usque ad 2.5 cm longis plus minus ciliatis obtecto; petiolis 
usque ad 25 cm longis, plus minus fimbriato-paleaceis ; foliis oblique 
ovatis, usque ad 20 cm longis, acuminatis, basi subaequilateraliter cordatis; 
peduneulis quam petioli longioribus, supra diffuse ramosis; floribus cir- 
citer 12 mm diametro; capsulis inaequaliter 3-alatis, apice truncatis, 
basi rotundatis, circiter 12 mm latis, 8 mm longis. 
Herbaceous, the stem creeping, stout, nearly 1 cm in diameter when 
dry, excluding the stipules, dark-brown, covered with numerous, membra- 
naceous, brown, ovate to oblong-ovate stipules 2 to 2.5 cm long, usually 
about 1 cm wide, cleft at the apex, the margins more or less fimbriate, 
the rootlets also very abundant. Leaves membranaceous, brownish when 
dry, obliquely ovate, 10 to 20 cm long, the base prominently and sub- 
equally cordate, the lobes broad, rounded, the sinus 1.5 to 3 cm deep, 
open, the apex lateral, acuminate, the margins subentire or obscurely 
undulate-repand, the nerves on both surfaces with scattered, stout, 
usually more or less curled, brown hairs; petioles at least 20 cm long, 
with numerous, scattered, brown, slender, more or less fimbriate paleae 
up to 5 mm in length. Peduncles longer than the petioles, glabrous or 
slightly brown-ciliate, up to 45 cm long, stout when fresh, dichotomously 
and rather diffusely branched. Flowers pink or white, the staminate 
and pistillate ones in the same inflorescence. Pistillate flowers : Pedicels 
slender, 10 to 13 mm long. Sepals two, suborbicular or orbicular-obo- 
vate, 5.5 to 6 mm in diameter. Petals two (sometimes only one), much 
narrower, narrowly oblong-obovate, about 5.5 mm long, 2.5 mm wide. 
Style less than 3 mm long, 3-cleft, the branches forked, the stigmas 
spirally arranged. Staminate flowers slightly larger than the pistillate 
ones, the sepals and petals similar but slightly larger. Stamens about 
35 ; filaments about 1 mm long, more or less united ; anthers oblong- 
obovoid or obovoid, blunt, less than 1 mm long. Capsule obovoid, about 
12 mm in diameter at the apex, 8 mm long, the apex truncate, the base 
rounded, unequally 3-winged, the wings reticulate, one 6 to 7 mm wide at 
the apex, the other two about 3 mm in width ; placentas 2-lamellate. 
Luzon, Province of Rizal, Montalban, Merrill 7062, January, 1910 (type), in 
fruit, Copeland s. n., September, 1908. 
