X, C, 4 
Merrill: Studies on Philippine Anonaceae, I 
258 
MITREPHORA SAMARENSIS sp. nov. 
Arbor 10 ad 12 m alta, partibus junioribus inflorescentiisque 
ferrugineo-pubescentibus ; foliis ovato-ellipticis ad oblong-ovatis, 
subcoriaceis, usque ad 10 cm longis, acuminatis, basi subacutis 
ad subrotundatis, nitidis, nervis utrinque 6 vel 7, subtus pro- 
minenfibus ; racemis paucifloris, floribus usque ad 3 cm diametro, 
petalis exterioribus elliptico-ovatis, undulatis, extus pubescenti- 
bus, intus glabris, interioribus arcuatis, circiter 12 mm longis., 
acuminatis, intus dense hirsutis; carpellis circiter 12, hirsutis. 
A tree 10 to 12 m high, the younger parts and the inflores- 
cences rather prominently ferruginous-pubescent. Branches te- 
rete, glabrous, nearly black when dry. Leaves subcoriaceous, 
ovate-elliptic to oblong-ovate, rather pale when dry, shining on 
both surfaces, glabrous or the midribs slightly pubescent, at 
least when young, 6 to 10 cm long, 2 to 4 cm wide, base sub- 
acute to subrounded, apex distinctly acuminate; lateral nerves 
6 or 7 on each side of the midrib, when young somewhat pubes- 
cent on the lower surface, curved, prominent, looped-anastomos- 
ing; petioles about 5 mm long. Racemes short, on the ultimate 
branchlets, mostly leaf-opposed, the rachis 1 cm long or less, 
densely ferruginous-pubescent as are the pedicels and sepals, 
each raceme producing but one or two flowers at a time, the 
pedicels 1 to 1.5 cm long. Sepals broadly ovate, coriaceous, 
somewhat acuminate, 2.5 to 3 mm in diameter. Outer petals 
elliptic-ovate, acuminate, base somewhat narrowed, up to 1.6 
cm long and 11 mm wide, outside pubescent, prominently un- 
dulate, inside glabrous, pale yellow to buff -yellow with blotches 
of red, inside deep orange; inner petals about 12 mm long, 
vaulted, pubescent externally, the claw 6 to 7 mm long, the limb 
broadly ovate, somewhat acuminate, basal angles rounded, about 
5 mm long and wide, inside densely hirsute. Stamens indefinite, 
closely packed, about 1 mm long, the truncate connectives con- 
cealing the anther-cells. Carpels about 12, oblong, hirsute, nar- 
rowed upward, about 1 mm long, the styles oblong-obovate, gla- 
brous, as long as the ovaries ; ovules about 4. 
Samar, Cauayan Valley, Ph.il. PL 1666 Ramos (type), April, 1914. Bili- 
ran, Bur. Sci. 18550 McGregor, June, 1914, in forests, altitude about 300 m, 
A species manifestly very closely allied to Mitrephora maingayi Hook. f. 
6 Th., but with much smaller, fewer nerved leaves. King figures the 
external petals of M. maingayi as prominently pubescent inside, while in 
the present species they are quite glabrous internally. This may be the 
same as Mitrephora pictiflora Elm., of which I have seen no specimens, but 
it differs in many details from the description of that species, notably in 
its somewhat smaller leaves, and smaller flowers, the outer petals quite 
glabrous inside, not strigose. 
