17, 5 Merrill: Studies on Philippine Rubiaceae, IV A477 
spreading, pale or dirty-brown hairs, especially on the midrib and 
nerves; lateral nerves about 7 on each side of the midrib, prom- 
inent, curved, ascending, anastomosing, the reticulations very lax; 
petioles pubescent, 2 to 3 cm long; stipules oblong-ovate, acute 
or somewhat acuminate, pubescent, about 6 mm long. Panicles 
ample, sessile or shortly peduncled, corymbose, up to 10 cm 
long and 15 cm wide, black when dry, softly pubescent. Flowers 
white, 4-merous, black when dry, the pedicels slender, up to 1 
cm in length. Calyx 2.5 to 3 mm long, densely pubescent, some- 
what urceolate, the teeth 4, acute, triangular, 0.5 mm long. 
Corolla-tube glabrous, 11 mm long, the lobes 4, oblong, obtuse 
to subacute, about 8 mm long and 3 mm wide. Ovary 2-celled, 
cells 1-ovulate; style and stigma slender, 3.5 cm long, glabrous. 
MINDANAO, Davao District, Mount Apo, Williams 2631 (type), 
April 5, 1905, Copeland 1249, April, 1904, altitude about 900 
meters, known to the Bagobos as sikarig. 
This species falls in the group with Pavetta indica Linn., but 
is distinguished by its indumentum, its much larger leaves, and 
ample, lax inflorescences. 
PAVETTA SUBFERRUGINEA sp. nov. 
Frutex circiter 3 m altus, ramulis junioribus, subtus foliis 
ad costa nervisque et inflorescentiis perspicue subferrugineo- 
pubescentibus; foliis chartaceis, olivaceis, oblongis ad oblongo- 
lanceolatis vel oblongo-ellipticis, usque ad 16 cm longis, tenuiter 
acuminatis, basi:cuneatis, nervis utrinque circiter 9, supra plus 
minusve impressis, subtus perspicuis; inflorescentiis laxis, sessi- 
libus vel subsessilibus; floribus 4-meris, corollae tubo 1.8 cm 
longo, utrinque glabro, fauce haud barbato, lobis subellipticis, 
6 mm longis. 
A shrub, about 3 m high, the younger parts, lower surface of 
the leaves, and inflorescences conspicuously and softly subferru- 
ginous-pubescent with spreading hairs. Branches pale, smooth, 
glabrous, terete. Leaves chartaceous, olivaceous and shining 
when dry, oblong to oblong-lanceolate or oblong-elliptic, 10 to 16 
cm long, 3 to 5 cm wide, the apex rather slenderly acuminate, 
base cuneate, the upper surface glabrous or somewhat harsh 
from the few, short, stiff hairs, the midrib pubescent, the lower 
surface rather densely subferruginous-pubescent on the midrib 
and lateral nerves, with scattered hairs on the epidermis; lateral 
nerves about 9 on each side of the midrib, somewhat impressed 
on the upper surface, prominent beneath, anastomosing, the re- 
ticulations lax, prominent; petioles pubescent, 1 to 1.8 cm long; 
