17, 5 Merrill: Studies on Philippine Rubiaceae, IV 443 
PLECTRONIA RAMOSII sp. nov. 
Species P. gynochthodes Baill, affinis, differt foliis minoribus, 
umbellulis 2- ad 4-floris. Arbor parva, glabra, ramis tenuibus, 
brunneis; foliis subcoriaceis, oblongis, utrinque subaequaliter 
attenuatis et acuminatis, usque ad 5 cm longis, in siccitate 
supra castaneis vel olivaceo-brunneis, nitidis, subtus in axillis 
barbato-glandulosis, nervis utrinque 3 vel 4, tenuibus, reticulis 
obsoletis; umbellulis axillaribus, solitariis, pedunculatis, 2- ad 
4-floris; fructibus obovoideis, brunneis, nitidis, in siccitate ru- 
gosis, circiter 1 cm longis. 
A small, glabrous tree; about 8 m high, the branches and 
branchlets terete, the former pale-brownish or grayish, the 
latter slender, reddish-brown. Leaves in general oblong, equally 
attenuate and acuminate at both ends, 4 to 5 cm long, 1 to 2 cm 
wide, subcoriaceous, the upper surface castaneous to olivaceous 
brown when dry, smooth, shining, the lower surface paler, glan- 
dular and bearded in the axils; lateral nerves slender, not prom- 
inent, 3 or 4 on each side of the midrib, the reticulations obsolete ; 
petioles 1 cm long or less. Umbels axillary, solitary, 2- to 4- 
flowered, their peduncles slender, about 8 mm long, the pedicels 
about as long as the peduncles. Fruits brown, shining, and 
somewhat rugose when dry, obovoid, about 1 cm long, 2- or 
1-seeded. 
LUZON, Tayabas Province, Umiray, Bur. Sci. 28973 Ramos & 
Edafio, June 1, 1917, in forests along the Umiray River at low 
altitudes. ; 
The alliance of this species is manifestly with Plectronia 
gynochthodes Baill. [P. wmbellata (Bartl.) K. Schum.], from 
which it is distinguished by its smaller, fewer-nerved leaves 
and few-flowered umbels. 
PLECTRONIA SUBCAPITATA sp. nov. 
Arbor glabra, circiter 8 m alta, ramis teretibus, ramulis com- 
pressis, sulcatis, brunneis, internodiis elongatis; foliis oblongis 
ad oblongo-lanceolatis, chartaceis ad subcoriaceis, usque ad 25 
em longis, in siccitate brunneis, nitidis, sursum attenuatis et 
perspicue acuminatis, basi acutis ad decurrento-acuminatis, 
nervis primariis utrinque circiter 5, curvato-adscendentibus, 
perspicuis, reticulis obsoletis; inflorescentiis axillaribus, sol- 
itariis, pedunculatis, subcapitatis, bracteis binis abrupte longe- 
cuspidatis subtensis, pedunculis patulis vel recurvatis, 1 ad 1.5 
cm longis; floribus numerosis, umbellatim dispositis, 4-meris, 
circiter 6 mm longis. 
