SERTULUM BONTOCENSE. 
97 
APOCYNACEAE. 
TRACHELOSPERMUM Lemaire. 
Trachelospermum vanoverberghii sp. nov. 
Frutex scandens, glaber; foliis oblongo-ellipticis ad oblongo- 
lanceolatis, nitidis, utrinque angustatis, basi acutis, apice acum- 
inatis, usque ad 7 cm longis; cymis axillaribus terminalibusque, 
longe pedunculatis, paucifloris ; floribus circiter 18 mm diametro. 
A slender, glabrous, woody vine 2 to 3 m high, or (?) longer, 
the branches slender, brown or reddish-brown. Leaves oblong - 
elliptic to oblong-lanceolate, 3 to 7 cm long, 1 to 2.5 cm wide, 
narrowed at both ends, base acute, apex shortly and obtusely 
acuminate, shining, the lower surface a little paler than the 
upper, when young membranaceous, soon becoming chartaceous 
or somewhat coriaceous; nerves 7 to 10 on each side of the 
midrib, rather distant, slender, straight, anastomosing, the 
reticulations lax; petioles about 3 mm long. Cymes mostly 
terminal, sometimes axillary, solitary, few-flowered; peduncles 
slender, 1.5 to 3.5 cm long, trichotomous and 3-flowered, or the 
branches themselves again trichotomous, each branchlet bearing 
3 flowers, the pedicels slender, 5 to 10 mm long. Sepals oblong- 
ovate, acute, about 2.5 mm long. Corolla-tube about 5 mm long, 
about 3 mm in diameter in the more or less inflated middle, 
glabrous inside and outside, the lobes spreading, strongly 
obliquely obovate, about 9 mm long, 6 to 7 mm wide, throat naked, 
not villous. Anthers inserted near the middle of the tube, 
included, lanceolate, acuminate, 3 mm long, cells produced at the 
base, adherent to the stigma; style slender, 1 to 1.5 mm long. 
Follicles unknown. Flowers white and pink. 
Luzon, Bontoc Subprovince, Bauco, Vanoverbergh 432, 1230 (type), 
April, 1910, and June, 1911, altitude 1,450 to 1,650 m, in forests and on 
hillsides: Benguet Subprovince, Baguio, Williams 1160, June 22, 1904, 
Bur. Sci. 14084 Robinson, May, 1911. I suspect also that Loher 3880, from 
Mount Arayat, Province of Pampanga, Luzon, is also referable here, of 
which a small fragment is in our herbarium. It was deteiTnined at Kew 
as Trachelospermum fragrans Hook. f. 
The species above described is allied to Trachelospermum fragrans 
Hook, f., differing from that species especially in its corolla-tube and 
throat being quite glabrous; it is also manifestly allied to T. jasminoides 
Lemaire of China, but seems to be sufficiently distinct from that species. 
The only representative of the genus for the Philippines, one species 
previously described, T. philippinense Elm., being a synonym of Micrechites 
schrieckii Rolfe. ' 
