17,6 Merrill: Studies on Philippine Rubiaceae, IV 467 
the flowers, the rachis, branches, pedicels, and calyces uniformly 
pubescent with short, scattered, appressed, cinereous hairs. 
Flowers white, 5-merous. Calyx 5 mm long, the limb produced 
3 mm above the ovary and conspicuously 5-toothed, the teeth 
lanceolate, acuminate, 1.5 mm long. Corolla-tube 6 mm long, 
somewhat pubescent within, bearded at the throat, the lobes 5, 
oblong, apiculate, 10 mm long, 3.5 mm wide. Anthers straight, 
slender, 10 mm long. Ovary 2-celled; cells 2-ovuled; style and 
stigma 1.8 cm long, slightly exserted, the style pubescent, the 
stigma grooved. 
NEGROS, San Carlos, For. Bur. 23388 Contreras, May 16, 1914, 
in thickets at low altitudes. 
This species is well characterized by being entirely glabrous 
except its sparingly appressed-pubescent inflorescences. Its 
alliance is with Tarenna eucrantha (Elm.) Merr. and T. pala- 
ivanensis (Elm.) Merr., but it is very distinct from both. 
TARENNA OBTUSIFOLIA sp. nov. 
Frutex vel arbor parva, inflorescentiis parce pubescentibus 
exceptis glaber; foliis oblongis, obtusis, usque ad 13 cm longis, 
in siccitate nigricantibus, nitidis, nervis utrinque circiter 8, dis- 
iinctis; inflorescentiis terminalibus, corymbosis, breviter pedun- 
culatis vel e basi ramosis; floribus 5-meris, calycis distincte 
5-dentatis, corollae tubo glabro, 5 mm longo, lobis distincte 
brevioribus, circiter 3.5 mm longis; stylis glabris. 
A shrub or small tree, glabrous except the inflorescence which 
is sparingly cinereous-pubescent with short appressed hairs. 
Branches terete, brownish, the branchlets rather distinctly 4- 
angled and often sulcate. Leaves firmly chartaceous to subcoria- 
ceous, black and shining on both surfaces when dry, oblong, 
7 to 13 cm long, 3 to 5 cm wide, base somewhat acuminate, often 
inequilateral, the apex obtuse, usually rounded, never acuminate ; 
lateral nerves about 8 on each side of the midrib, distinct, the 
reticulations lax, slender; petioles 2 to 3 cm long; stipule's 
broadly ovate, acuminate, about 5 mm long. Inflorescences ter- 
minal, shortly peduncled or branched from the base, about 6 cm 
long and about as broad, sparingly appressed-pubescent with 
short hairs. Calyx ovate-urceolate, 2 mm long, slightly pubes- 
cent, with 5 distinct, broad, short teeth. Corolla-tube glabrous, 
5 mm long, the throat densely villous, the lobes 5, oblong, obtuse, 
3.5 mm long and 1.6 mm wide. Anthers 3 mm long. Style and 
stigma 11 mm long, the style glabrous, the stigma cylindric, 
slender, obscurely grooved; ovules several in each cell. 
