Shorea patoiensis Ashton, Gard. Bull. Sing. 19 (1962)
Latin for ?
Upper canopy tree up to 43 m tall and 82 cm dbh. Stem with resin. Stipules
ca. 8 mm long. Leaves alternate, simple, penni-veined, glabrous. Flowers ca. 9
mm in diameter, white-yellow-pink, placed in panicles. Fruits ca. 18 mm long,
Medium-sized tree. Vegetative parts glabrous but
for the fimbriate stipule and bud scales and frequently
a white waxy powder on young buds and twigs in
mature trees. Twig c. 1 mm apically, slender, much
branched in mature trees, terete, smooth or rugulose.
Leaf bud c 3 by 1 mm (to 4 by 2 mm in young trees),
narrowly ovoid, obtuse with the bud scales conspicuously
patent. Stipule c. 8 by 2 mm, glabrous but for
margin, oblong, acute. Leaves 5-8 by 2-3.5 cm, ovate,
chartaceous, frequently subfalcate; base +/- broadly
cuneate, decurrent for up to 1 mm at the petiole
insertion; acumen c. 1 cm long, narrow; nerves 7-9
pairs, curved, set obliquely (35-45 degrees), slightly elevated
above, slender but prominent beneath; tertiary nerves
densely scalariform; petiole 7-10 mm long. Panicle to
9 cm long, terminal or axillary, rather short and
compact, slender, terete, shortly persistently pale
greyish brown pubescent; singly or doubly branched,
branchlets to 1 cm long, bearing to 6 flowers;
bracteoles minute, fugaceous. Flower bud to 3.5 by 1.5
mm, lanceolate, acute. Calyx densely reddish brown
pubescent; lobes very small, suborbicular, obtuse, the
inner 2 somewhat thinner, constricted at the base.
Petals bright lemon-yellow, linear, imbricate and
forming a cup at the base, twisted and spreading
apically. Stamens 15, in inequal verticils; filaments
rather short, broad at base, abruptly tapering and
filiform distally; anther subglobose; appendage to
connective as long as anther, shortly ciliate towards
the apex, reaching almost to the style apex. Ovary
ovoid, shortly pubescent; stylopodium cylindrical,
pubescent; style short, glabrous. Fruit calyx shorter
than nut, caducous yellowish buff pubescent, margin
persistently fimbriate; lobes 3-5 mm long and broad,
subequal, broadly ovate, +/- adpressed to the base of
the nut and united at the base to form a c. 5 mm cup.
Nut to 15 by 8 mm, small, oblong-ellipsoid, striated,
glabrescent at maturity, with a minute style remnant.
[from Flora Malesiana]
In undisturbed mixed dipterocarp forest up to 1000 m altitude. On hillsides
and ridges with sandy to clay soils, also often on limestone. Prefers
The timber is used.
Borneo: Damar hitam padi, Kahan bato, Lempong, Lun, Malejomit, Njerakat, Seraya
kuning, Seraya kuning pinang.