The Philippine Journal of Science, C. Botany. 
Vol. XII, No. 3, May, 1917. 
STUDIES ON PHILIPPINE RUBIACEAE, III ^ 
» By E. D. Merrill " 
{From the Botanical Section of the Biological Laboratory, Bureau of 
Science, Manila, P. I.) 
The present paper is essentially similar to the two preceding 
ones published under the same title and consists of the descrip- 
tions of apparently undescribed species in the genera Neonau- 
clea, Hedyotis, Urophyllum, Greeniopsis, Ophiorrhiza, Plectronia, 
Ixora, Grumilea, and Psychotria. Twenty-three new species are 
proposed and described, and a new name is proposed for one 
previously described species of Timonius. 
RUBIACEAE 
NEONAUCLEA Merrill 
NEONAUCLEA OLIGOPHLEBIA sp. nov. 
Arbor circiter 8 m alta, capsulis exceptis glabra, ramis ramul- 
isque teretibus, tenuibus; foliis in siccitate flavido-viridis, ob- 
longis ad oblongo-obovatis, subcoriaceis, usque ad 9 cm longis, 
prominente obtuse acuminatis, basi angustatis, cuneatis, nervis 
utrinque 2 vel 3, adscendentibus, subtus prominentibus ; capi- 
tulis terminalibus, solitariis vel trinis, longe pedunculatis, sub 
fructu circiter 8 mm diametro, capsulis anguste oblongo-obovoi- 
deis, circiter 2.5 mm longis, leviter hirsutis, apice 4-denticulatis. 
A tree about 8 m high, glabrous except the somewhat hirsute 
capsules. Branches and branchlets slender, terete, cinereous in 
color. Leaves opposite, oblong to oblong-obovate, subcoriaceous, 
when dry yellowish-green, especially on the lower surface, some- 
what shining, 5 to 9 cm long, 2.5 to 3.5 cm wide, the apex rather 
prominently subcaudate-acuminate, the acumen rather slender, 
blunt, usually about 1 cm long, the base gradually narrowed, 
cuneate ; lateral nerves 2 or 3 on each side of the midrib, promi- 
^ Merrill, E. D., Studies on Philippine Rubiaceae, I, Philip. Joiirn. Sci. 
8 (1913) Bot. 31-62, t. 1; Studies on Philippine Rubiaceae, II, op. cit. 10 
(1915) Bot. 99-144. 
^ Professor of botany. University of the Philippines. 
159 
