x, c, 2 Merrill: Studies on Philippine Rubiaceae, II 103 
September, 1912. To this species I also refer the following specimens: 
Province of Rizal, For. Bur. U07 Ahern’s collector, February, 1904, Bur. 
Sci. 13786 Ramos, October, 1914: Province of Nueva Vizcaya, Bur. Sci. 
11378 McGregor, April, 1912. Negros, For. Bur. 19071, 19100 Curran, 
October, 1909. 
The species is allied to Vncaria canescens Korth., but has quite glabrous 
leaves and fewer nerves. It also seems to approach Uncaria pteropoda 
Miq., but the nerves are fewer and the petioles are not winged. 
MUSSAENDA Linnaeus 
MUSSAENDA PALAWAN ENSIS sp. nov. 
Frutex erectus 2 ad 3 m altus, plus minusve ciliato-hirsutus ; 
foliis oblongis ad oblongo-ovatis, breviter petiolatis, usque ad 13 
cm longis, acuminatis, chartaceis, nervis utrinque circiter 10; 
inflorescentiis terminalibus, cymosis; calycis lobis 5, lanceolatis, 
acuminatis, circiter 7 mm longis, deciduis; corolla aurantiaca, 
circiter 2.2 cm longa, lobis brevibus, apiculato-acuminatis. 
A shrub 2 to 3 m high, erect, most parts more or less ciliate- 
hirsute, the younger parts densely do. Branches reddish-brown, 
terete, glabrous, the younger ones hirsute. Leaves of each pair 
subequal, oblong to oblong-ovate, 7 to 13 cm long, 3 to 6 cm 
wide, subequally narrowed to the acute or rounded base and the 
acuminate apex, chartaceous, pale or brownish when dry, slightly 
shining, the upper surface with scattered, rather stiff hairs, the 
lower surface rather prominently ciliate with scattered, pale 
hairs; lateral nerves about 10 on each side of the midrib; peti- 
oles 5 mm long or less, hirsute; stipules about 6 mm long, 
lanceolate, acuminate, hirsute. Cymes terminal, rather few flow- 
ered, densely ciliate-hirsute, the flowers crowded, 5-merous, 
yellow. Calyx-tube about 6 mm long, densely hirsute, the teeth 
lanceolate, long and slenderly acuminate, about 7 mm long, more 
or less pubescent, deciduous, the leaflike, enlarged one white, 
chartaceous, ovate, blunt-acuminate, slightly hirsute, the blade 
up to 8 cm long, the petiolar part 1 to 1.5 cm long. Corolla 
infundibuliform, white, 2.2 cm long, the tube densely appressed- 
hirsute outside, somewhat enlarged upward, the lobes broadly 
ovate, 6 to 7 mm long, their apices prominently acuminate. 
Fruit ovoid or somewhat obovoid, about 7 mm long, truncate, base 
acute, outside slightly hirsute with few scattered hairs. 
Palawan, Alphonso XIII, Bur. Sci. 15531 Fenix (type), July, 1912; Point 
Separation, on the opposite side of the island, Merrill 867, Feb. 18, 1903, 
in old clearings, thickets, etc. 
A species perhaps as closely allied to Mussaeyida philippica Rich, as to 
any other species, well characterized, however, by its long acuminate sepals 
and its prominently and rather abruptly acuminate calyx lobes. 
