THR FT.ORA OF MOUNT IIALCOX. 273 
r 
UNONA Linn. f. 
W Unona mindorensis Merril! n. sp. % Bienopctalum.. 
w Poliis oblougo-lanceolatis acuininatis 10 ail 17 cm. longis, basi acutis; 
podiuuulis a.xillaribus solitariis ad X.2 cm. longis; pelalis G, subaoqua- 
lil)us, ovato-lancoolatis, acutis, 1.5 ad 1.7 cm. longis, puboHccntibus; 
ovulis 3 Tiniserialibus; carpullis mahiris ovatis, acutis, ad 1.5 cm. longis. 
A small tree about G m. liigb; braiicbes slender brownish gra}^, sliglitly 
pubescent, terete. Leaves submembranous^ oblong lanceolate^ 10 to 17 
em. longj 3.5 to 4.5 cm. wide, the base acute, the apex gradually acumi- 
nate, dull above, somewbat paler and slightly shining beneath, glabrous 
or nearly so; nerves about 9 on each side of the midrib, ascending, distinct 
beneath, the reticulations few, indistinct; petioles stout, rugose, 5 mm. 
long or less. Peduncles axillary, solitary', about 1.2 cm. long, slightly 
pubescent and with one or two small basal bracts. Flowers greenish- 
white. Sepals 3, pubescent, triangular ovate, acute, about 3.5 mm. long. 
Petals G, free, spreading in flower, ovate-lanceolate, acute, pubescent, the 
outer three about 1.7 cm. long, 7 mm. wide, the inner three 1.5 cm. long, 
5 mm. wide. Stamens many, glabrous, 2 mm. long, the connectives 
truncate, overlapping. Ovaries about 12, densely hirsute, oblong, 3 mm. 
long; ovules 3, parietal in one roM-; styles 1.5 mm. long. Carpels ovoid, 
r 
about 1.5 cm. long, acute, narrowed below into a short stout stipe, brown 
when dry, slightly pubescent. 
In forests at 300 m. alt. (No. 5568). A closely related species is represented 
% by No. 4060 Merrill, from the Baco River, near the base of Halcon, Marcli, 190;"). 
OXYMITRA Illume. 
Oxymitra sp. near 0. glauca Hk. f. et Th. 
In forests at 180 m. alt. (No. 5029). Specimens with fruit only, but undoubt- 
edly referable to this genus. 
PHAEANTHUS Hook. f. et Th. 
Phaeanthus cumingii Miq. Fl. Ind. Bat. 1= (1859) 51. 
In forests at 700 ni. alt. (No. 5048). 
Widely distributed in the Philippines. Endemic. 
Phaeanthus acuminatus Merr. in Oovt. Lah. Publ. 35 (lOOfi) 11. 
In f<n-ests at 150 m. alt. (No. 4:J21 Merrill) June, 1900. 
" Known only from Mindoro and IVlawan. 
GONIOTHALAMUS Blunie. 
Goniothalamus elmeri Merr. in Govt. Lab. Puhl. 29 (1005) 13. 
In forests at 900 m. alt. (No. 4354 Mcrrilt) June, 1900. 
Widely distributed in the Philippines. Endemic. 
