438 The Philippine Journal of Science 1922 
VITEX Linnaeus 
VITEX UNIFOLIOLATA sp. nov. 
Frutex vel arbor parva, inflorescentiis parce pubescentibus 
exceptis glabra, ramulis quadrangulatis, 8 mm diametro; foliis 
unifoliolatis, coriaceis, nitidis, integris, oblongis, 20 ad 27 cm 
longis, subtus dense puncticulatis, acuminatis, basi rotundatis, 
supra plus minusve bullatis, nervis utrinque 9 ad 12, valde per- 
spicuis; inflorescentiis solitariis, tenuibus, terminalibus, circiter 
40 cm longis, ramis primariis 1 vel 2, valde elongatis, cymis 
paucis, distantibus, paucifloris, 3 ad 4 cm longis; calycibus 
cupulatis, aequaliter 5-lobatis, lobis ovatis, obtusis, 0.5 mm longis; 
corolla 11 mm longa, bilabiata; fructibus junioribus glabris, 
calycis valde accrescentibus. 
A shrub or small tree, glabrous except the inflorescences, the 
branches pale grayish, somewhat 4-angled, the ultimate ones 
about 3 mm in diameter. Leaves simple, the petioles about 1 
cm long, the leaflets coriaceous, pale olivaceous when dry, oblong, 
20 to 27 cm long, 7 to 10 cm wide, entire, shining, the upper 
surface more or less bullate, the lower surface slightly paler than 
the upper and densely puncticulate, base rounded, apex rather 
slenderly acuminate; lateral nerves 9 to 12 on each side of the 
midrib, prominent on both surfaces, curved-anastomosing, the 
reticulations lax, very prominent. Inflorescences solitary, ter- 
minal, slender, about 40 cm long, the peduncle about 6 cm long, 
4-angled, rather slender, about 2.5 mm in diameter, the primary 
branches 1 or 2 only, greatly elongated, slightly pubescent, the 
individual cymes widely scattered, few-flowered, 3 to 4 cm long. 
Flowers blue. Calyx cup-shaped, about 3 mm long, equally 5- 
lobed, the lobes ovate, obtuse, 0.5 mm long, appressed-pubescent 
with short hairs. Corolla 11 mm long, the tube 5 mm long, 
slightly pubescent outside; lower lip 3-lobed, the middle lobe 
large, orbicular, glabrous, entire, about 5 mm in diameter, the 
two lateral ones elliptic, rounded, 3 mm long; upper lip 2 mm 
long, cleft into two broadly ovate, obtuse lobes; filaments 3 to 4 
mm long, somewhat exserted, villous below. Young fruit gla- 
brous or nearly so, inclosed by the accrescent calyx. 
MINDANAO, Zamboanga District, Malangas, Bur. Sci. 37048 
Ramos & Edafio, October 27, 1919. In forests along streams at 
low altitudes, locally known as babako. 
The alliance of this species is manifestly with Vitex clarkeana 
King and Gamble of the Malay Peninsula and Borneo, from 
which it differs in its very slender inflorescences; in details of its 
