XIII. c.i Merrill: Philippine Plants, XIII 43 



MASTIXIA 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 sulcata, 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 vi^idely distributed in the Philippines. It 

 differs constantly, how^ever, 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" 

 (1916) 41. 

 Vitex premnoides Elm. Leafl. Philip. Bot. 8 (1915) 2874. 



The type of this species is Elmer 11644, 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, 25224 

 AlvareZf March, 1916. The species belongs in the section Tetramastixia. 



