112 
MERRILL AND ROLFE. 
slightly cordate, the apex acuminate, the margins irregularly dentate, 
submembranous, somewhat pubescent beneath, glabrous above except on 
the nerves, the base with a pair of strong nerves and one or two pairs 
of shorter ones, the primary nerves above the basal ones about 4 on 
each side of the midrib, distant, prominent, ascending, the reticula- 
tions lax; petioles puberulent, 10 to 14 cm long. Flowers large for the 
genus, 3 cm in diameter, yellow, the lower ones axillary, solitary, the 
upper ones forming a terminal raceme, the pedicels jointed in the middle, 
geniculate, densely puberulent, 3 cm long or less, the bracts deciduous, 
linear, densely pubescent, about 8 mm long. Calyx densely stellate- 
pubescent, 1.5 to 2 cm in diameter, cleft to about the middle; the teeth 
ovate, acute or somewhat acuminate, about 7 mm long, each 3-nerved. 
Petals about 17 mm long, 14 mm wide, irregularly triangular-obovate, 
refuse, with numerous nerves radiating from the base, slightly pilose, the 
base acute. Stamin'al column about 4 mm long, stamens very numerous. 
Ovary pubescent. Carpels about 8, rugose, somewhat stellate-pubescent 
on the upper or exposed surface, about 5 mm long, each tipped with 
two 4 mm long awns which are furnished with reflexed hairs. Seeds 
black, triangular-compressed like the carpels, glabrous except the pubes- 
cent top and the awns. 
Balabac, Bur. Sci. 456 Mangubat, Marcli-April, 1906. 
A species somewhat resembling Sida corylifolia Wall., but distinguished from 
that species by its large flowers and puberulent branches, pedicels, calyx, etc. 
BOMBYCIDENDRON Zoll. 
Bombycidendron Vidalianum (Naves) Merrill & Rolfe comb. nov. 
Hibiscus Vidalianus Naves in Blanco FI. Filip, ed. 3, pi. 333, nomen; Vidal 
Sinopsis Atlas 16, pi. 16, f. C., with description; Cat. PI. Prov. Manila (1880) 
19. 
Hibiscus grewiaefolius F.-Vill. Nov. App. (1880) 24, exel. syn. Miquel. 
Thespesia campylosiphon Vidal Rev. PI. Vase. Filip. (1886) 64, non Turcz. 
Bombycidendron glabrescens Warb. in Perk.' Frag. FI. Philip. (1904) 110. 
Luzon, Province of Rizal, Loher 138, 139; Vidal 1114; Montalban, Merrill 
501S; Bosoboso, For. Bur. 1810, 3331 Ahern’s collector; Bur. Sci. 4621, If619 
Ramos; For. Bur. 10015 Curran; Antipolo, Decad. Philip. Forest FI. 21: Province 
of Bulacan, Norzagaray, Yoder 84: Province of Benguet, Baguio, For. Bur. 5139 
Curran. 
The specific name here adopted for this species was published as a nomen 
nudum in 1880, and with a description in 1883, being redescribed by Warburg 
in 1904 as B. glabrescens. Bombycidendron campylosiphon (Turcz.) Warb. is 
quite distinct from B. vidalianum, being characterized by its dense, soft pubes- 
cence, Vidal erroneously reducing the species, that was dedicated to him, to 
Turczaninow’s species. B. parvifolium Warb. is very similar to II. campylosi- 
phon in its pubescence, but has smaller leaves. The type, preserved in the 
Berlin Herbarium, is very fragmentary, and consists of poorly prepared leaf- 
specimens only, so that it will prove difficult to establish the validity of the 
species. 
