NEW PITTTJPPIXE FLORA. 425 
MiNDORO, Baco River (F. B. 5518 Mm ill) November, 1000, in mRngrove 
swamps. 
Var. longipetiolata Merrill n. var. 
Petiolo 1.5 ad 4.5 cm. lo]i<,^o, coteroqiiiu uL 0. Javanlca B). 
I Mknoouo, Subaaii (G226 Merrill) Dccumher, lUOii; Haco River {h\ B. 54«8 
Merritt) November, IDUO, in man*jrove swiunpa. 
The genus is new to tho Philippines, the five kno^\ n -pc-iort hoin^^ Malayan, 
the genus therefore a charafteristic :Nralayan one. 0. juiamni is found along 
the seashore from Tennssfrini through the ^Talayun Peninsula to Bornw), Java. 
Banka and Billeton. 
VERHENAOE^. 
PETRAEOVITEX Oli 
\i'\\ 
Petraeovitex trifoliata Mnnill n. sp. 
Fnttex Roflndens; foliis oppositis, trifoliatis. glabris V(*1 parro ptibo- 
rulis; petiolo 3 ad 4 em. loiigo; foliolib ovatis vel oblougo-ovatis, acu- 
minatis, usqne ad 7 cm. ]ongis; paiiiciilis toriiiiiialiljus, 20 ai] 10 irii. 
longis, puberulis; flores 8 mm. lougi : calycis fnietiferift lobis 1.5 ad 2 cm. 
longis. 
A scandent shrul). Jiranches brown or gray, quadrangular, pulHTulcnt, 
becoming glabrous, 1.5 to 2 mm. in diameter. Jjeaves opposite, trifo- 
liate, the petiole 3 to 4 cm. long, piiberuleut, the petiulules 1 to 10 mm. 
long; leaflets ovate to oblong-ovate, 7 cm. long, '^.5 to 5 cm. \vide, 
subcoriaceous, glabrous or nearly so, somewhat sliining, paler beneath^ 
the apex acuminate, tlie base rounded, often somewhat inequilateral; 
nerves rather prominent beneath, about 4 on each pide of the midrib^, 
the reticulations lax. Panicles terminal, tiie lower branches subtended 
b}- leaves, 20 to 40 cm. long, pubendent, 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, pubendent outside, slightly so at the throat inside, the lobos 
3 mm. long, oblong-ovate, rounded. Stameuii 4; /ilaments about 4 mm. 
long, slightly puberulent; anthers 1 mm. long. Calyx in rniii accns- 
eent, the lobes 1.5 to 2 cm. long, oblannoolnte, spatulate, obtuse. 
Palawan, Victoria Peak {B. S. 708 Foxurorthy) Mnreh, 1000. on open '.t.'i-p 
slopes at 900 m. alt. Nearly or tiuite the name speriefi is repre-scrrt***! by a 
specimen collected by Hallier in February, 1904, at 8an llamon, near '/.nm- 
boanga, Mindanao. 
The genuB new to the Phi!ip]>ines, but two s|)eejeh prfvionnly known, one from 
Buru Island and one from New (Jninra. The pn'r..*nf ^jMn-ies i« apparently nioH 
closely related to the Buru species, Petraeovitex ritdclii <iVi\. in Hook. Icon. 
PI. III. 5 (1883) 15. PL IJfiO, the type of the genus, difttinguiahe*! at once 
from that species l)y its trifoliate leaves. 
