NEW PHILIPPINE FLORA. 
425 
Mindoro, Baco River (F. B. 5518 Merritt) Novembei', 1906, in mangrove 
swamps. 
Var. longipetiolata Merrill n. var. 
Petiolo 1.5 ad 4.5 cm. longo, ceteroquin ut 0. javanica Bl. 
Mindoro, Subaan (6226 Merrill) December, 1906; Baco River (F. B. 5488 
Merritt) Novembei - , 1906, in mangrove swamps. 
The genus is new to the Philippines, the five known species being Malayan, 
the g'enus therefore a characteristic Malayan one. 0. javanica is found along 
the seashore from Tenasserim through the Malayan Peninsula to Borneo, Java, 
Banka and Billeton. 
VERBENACE2E. 
PETRAEOVITEX Oliver. 
Petraeovitex trifoliata Merrill n. sp.‘ 
Pratex scandens; foliis oppositis, trifoliatis, glabris vel parce pube- 
rulis ; petiolo 3 ad 4 cm. longo ; foliolis ovatis vel oblongo-ovatis, acu- 
minatis, usque ad 7 cm. longis; paniculis terminalibus, 20 ad 40 cm. 
longis, puberulis; flores 8 mm. long!; calycis fructiferis lobis 1.5 ad 2 cm. 
longis. 
A scandent shrub. Branches brown or gray, quadrangular, puberulent, 
becoming glabrous, 1.5 to 2 mm. in diameter. Leaves opposite, trifo- 
liate, the petiole 3 to 4 cm. long, puberulent, the petiolules 4 to 10 mm. 
long; leaflets ovate to oblong-ovate, 7 cm. long, 2.5 to 5 cm. wide, 
subcoriaceous, glabrous or nearly so, somewhat shining, paler beneath, 
the apex acuminate, the base rounded, often somewhat inequilateral; 
nerves rather prominent beneath, about 4 on each side of the midrib, 
the reticulations lax. Panicles terminal, the lower branches subtended 
by leaves, 20 to 40 cm. long, puberulent, the axis and branches quad- 
rangular. Flowers purple, about 8 mm. long. Calyx puberulent, the 
tube 4. mm. long, the lobes in anthesis 4 mm. long, oblong-lanceolate. 
Corolla equalling the calyx, the tube 5 mm. long, narrowly funnel- 
shaped, puberulent outside, slightly so at the throat inside, the lobes 
3 mm. long, oblong-ovate, rounded. Stamens 4 ; filaments about 4 mm. 
long, slightly puberulent ; anthers 1 mm. long. Calyx in fruit accres- 
cent, the lobes 1.5 to 2 cm. long, oblanceolate, spatrdate, obtuse. 
Palawan, Victoria Peak (B. S. 708 Foxworthy) March, 1906, on open steep 
slopes at 900 ni. alt. Nearly or quite the same speeies is represented by a 
specimen collected by Hallier in February, 1904, at San Ramon, near Zam- 
boanga, Mindanao. 
The genus new to the Philippines, but two species previously known, one from 
Buru Island and one from New Guinea. The present species is apparently most 
closely related to the Buru species, Petraeovitex riedelii Oliv. in Hook. Icon. 
PL III. 5 (1883) 15. PI. 1//.20, the type of the genus, distinguished at once 
from that species by its trifoliate leaves. 
