VIII, c. 1 Merrill: Studies on Philippine Rubiaceae, I 45 
brown when dry, slightly shining, the lower surface paler than 
the upper, the apex obtuse or very broadly and shortly blunt- 
acuminate, the base rounded or subacute, sometimes slightly 
inequilateral; lateral nerves 8 to 10 on each side of the midrib, 
prominent, anastomosing, the reticulations lax; petioles 1 to. 
2.5 cm long; stipules caducous, not seen. Heads terminal, soli- 
tary, their peduncles about 5 cm long, with distinct bract-scars 
near their apices, just before anthesis 3 cm in diameter, the 
close-packed projecting cal>Tc-lobes yellowish, pubescent, heads in 
anthesis 6 cm in diameter. Flowers ebracteolate. Calyx-tube 3 
mm long, the lower one-half nearly glabrous, the limb pubescent, 
irregularly lobed by the persistent, 1 to 2 mm long bases of the 
lobes, the lobes at anthesis very narrowly club-shaped, yellowish, 
rather densely pubescent above, about 7 mm long, deciduous. 
Corolla 12 to 14 mm long, glabrous, slightly widened upward, 
the lobes 5, oblong-ovate, rounded or obtuse, 2 mm long. An- 
thers included, 2 mm long. Style exserted; stigma ovoid. 
Luzon, Province of Zambales, Botolan, Merrill 2980, June, 1903, speci- 
mens collected by S. Garcia. 
In spite of its very differently shaped leaves probably as closely allied 
to Nauclea reticulata Havil., as to any other species. Another manifest 
ally is N. jagori Merr., which has very narrow leaves. 
NAUCLEA VENOSA sp. nov. ^ 
Arbor circiter 5 m alta, inflorescentiis exceptis glabra; foliis 
usque ad 17 cm longis, crasse coriaceis, oblongo-ovatis, utrinque 
subconcoloribus nitidisque, breviter acuminatis, basi late rotun- 
datis vel subcordatis, nervis utrinque circiter 16, valde promi- 
nentibus; pedunculis solitariis; capitulis (fructibus juvenilibus) 
2.5 cm diametro, calycis lobis 5, lineari-spatulatis, pubescentibus, 
2 ad 3 mm longis. 
A tree about 5 m high, glabrous except the inflorescence. 
Branches reddish-brown, the younger ones strongly compressed. 
Leaves oblong-ovate or broadly oblong-ovate, thickly coriace- 
ous, 10 to 17 cm long, 5 to 8 cm wide, sometimes somewhat 
falcate, the apex distinctly and sharply acuminate, the base 
broadly rounded or slightly cordate, brownish and shining on 
both surfaces when dry; lateral nerves about 16 on each side of 
the midrib, very prominent, the reticulations subparallel, slen- 
der, distinct; petioles 2.5 to 3 cm long; stipules not seen. Pedun- 
cles solitary, stout, 1.5 to 2.5 cm long, apparently bracteate at 
about the middle, judging by the scars (bracts not seen). Heads 
globose, in young fruit 2.5 cm in diameter, very dense, the flowers 
ebracteolate. Calyx free, the tube glabrous, 5 to 6 mm long, the 
