XIII, C, 1 
Merrill: Philippine Plants, XIII 
43 
M ASTIXI A SUBCAUDATA sp. nov. § Tetramastixia. 
Arbor parva novellis et inflorescentiis exceptis glabra; foliis 
stricte alternis, chartaceis ad subcoriaceis, oblongo-obovatis, 
usque ad 6 cm longis, apice perspicue subcaudato-acuminatis, 
basi cuneatis, nervis utrinque 4 ad 6, tenuibus; inflorescentiis 
2 ad 3 cm longis, adpresse cinereo-pubescentibus ; floribus 4- 
meris, circiter 3 mm longis, calycibus haud dentatis, extus gla- 
bris vel parcissime pubescentibus ; petalis glabris. 
A small tree, the very youngest parts and the inflorescences 
appressed cinereous-pubescent, otherwise glabrous. Branches 
terete, rather pale when dry. Leaves chartaceous to subcoria- 
ceous, oblong-obovate, 5 to 6 cm long, 2 to 2.5 cm wide, the apex 
prominently subcaudate-acuminate, the acumen blunt and up to 
1 cm in length, base cuneate, when dry pale-olivaceous, somewhat 
shining, the lower surface paler than the upper; lateral nerves 
4 to 6 on each side of the midrib, slender, curved, the reticula- 
tions indistinct; petioles 7 to 10 ‘mm long, when young slightly 
pubescent, becoming glabrous. Panicles terminal, 2 to 3 cm 
long, appressed cinereous-pubescent with short hairs, branched 
at or from near the base. Flowers numerous, yellowish, about 
3 mm long, 4-merous, the pedicels very short, the bracteoles 
ovate, acute, pubescent, 1 mm long or less. Calyx about 2 mm 
long, slightly pubescent, the limb narrow, undulate, somewhat 
spreading, entire or very obscurely toothed. Petals broadly 
ovate, obtuse, glabrous, 1.5 mm long. Anthers suborbicular, 1 
mm long. Top of the ovary sulcate, the style stout, angled, 0.8 
mm long. 
Luzon, Sorsogon Province, Mount Lalao, Bur. Sci. 23353 Ramos, August 
23, 1915, on the forested summit of the mountain, altitude not indicated. 
The above specimen was originally determined as Mastixia philippinensis 
Wang., a species common and widely distributed in the Philippines. It 
differs constantly, however, in its 4-merous flowers, and besides has smaller, 
somewhat differently shaped leaves, entire or subentire calyx-limb, and 
glabrous petals. 
MASTIXIA PREMNOIDES (Elm.) Hallier f. Beihefte Bot. Centralbl. 34 2 
(1916) 41. 
Vitex premnoides Elm. Leafl. Philip. Bot. 3 (1915) 2874. 
The type of this species is Elmer 1164b, from Mount Apo, Mindanao. 
The species is also represented by the following specimens from the Lanao 
District, Mindanao, which had been long since written up by me, but not 
published, as a distinct species of Mastixia: Clemens 683, in flower, and 
without number, in fruit, March and February, 1907, For. Bur. 25208, 2522b 
Alvarez, March, 1916. The species belongs in the section Tetramastixia. 
