Journal of the Federated Malay States museums - Sabrizain.org

I
li
H. N. Ridley: Botany of Gnnong Tahan. 151
Bracts very small, lanceolate, scurfy brown ; pedicels jjj inch
long; ovary obconic; petals o\'ate-obtuse, connate, as long as
the ovary; sepals reduced to minute points. Stamens very
short; filaments as long as the elliptic-ovate, obtuse, deeply
grooved anthers. Disc umbonate, rugose.
On the Padang in small woods. Endemic.
Most nearly allied to H. Hullettii, King, but a taller
slenderer plant with smaller leaves.
63. Heptapleukum coriifolium, Ridl. Common on
the Padang. A fairly large erect shrub here, about 8 feet tall.
On Gunong Berumbun in Perak, where the type was found, it
was adwarf shrub only a couple of feet tall.
GAMOPETALiE.
CAPRIFOLIACE^.
64. Viburnum longistamineum, n. sp.
A shrub about 12 feet tall. Leaves opposite, elliptic-cuspidate,
base cuneate, membranous, glabrous, with four pairs of
nerves, slender above, fairly stout, elevate beneath, 3J-4J
inches long, 2 inches wide, petiole half an inch long, all
glabrous except for a tuft of hairs in the nerve-axils. Corymb
terminal on peduncle, 2 inches long; branches umbellate, f
inch long, secondary branches \ inch long, umbellate, all subglabrous
with a few white hairs. Bracts very sm^I, ovate.
Flowers sessile, white ; calyx oblong, with 5 ver}- short lobes,
ovate, margins ciliate. Corolla shortly campanulate, with 5
ovate spreading lobes, white; whole flower \ inch long and as
wide. Stamens 5 ; filaments four times as long as the corolla,
spirally twisted, \ inch long, white ; anthers elliptic, obtuse,
dorsifixed. Pistil short conic, truncate, ribbed ; stigma small,
conic.
Woods by the streams on the Padang at 5,600 feet
elevation.
Allied to V. sanibucinum, BL, the common low-country
species, but nearly glabrous, with a smaller corymb (2 inches
across) and very long projecting stamens.
RUBIACE^.
65. Argostemma involucratum, Hemsley. Common on
banks of streams on the Padang.
Distribution. All the higher hills of the Peninsula.
*66. Argostemma muscicola, Ridl. op. cit.- p. 310.
Common on banks of streams in the Padang, also at Wray's
Camp. This plant, besides being a tufted erect herb, creeps
with a slender stem and distant leaves. Endemic.
67. Argostemma elongatum, n. sp.
Stem succulent, creeping, 2 feet or less long, with slender
roots from the nodes, which are 3 inches apart. Leaves very
unequal, the larger ones thin, succulent, glabrous, ovateacuminate,
base rounded, pale beneath, with 10 to 12 pairs of