Shorea johorensis Foxw., Mal. For. Rec. 10 (1932)
Named after a Malaysian province where the species occurs.
Shorea leptoclados Sym.
Emergent tree up to 58 m tall and 127 cm dbh. Stem with resin. Stipules up
to ca. 3.5 mm long. Leaves alternate, simple, penni-veined, rather long petiole,
glabrous. Flowers ca. 16 mm in diameter, white-yellow, placed in panicles.
Fruits ca. 14 mm long, green-pink-red, with three ca. 90 mm long wings, wind
Large buttressed tree. Twig, panicle, leaf bud,
stipule, petiole, nersation beneath and midrib above
shortly evenly persistently grey-buff pubescent; young
leaf caducously so. Twig 2-3 mm diameter apically, much
branched, slightly ribbed and compressed when
young, becoming terete, drying glabrous, smooth;
stipule scars 1.5-2 mm long, pale, falcate, descending.
Bud 6-8 by 2-3 mm, ovoid, compressed. Stipule to 3.5
by 0.7 mm, +/- caducous, lanceolate, acute, constricted
at base. Leaves 9-14 by 4.2-7.5 cm, chartaceous to
thinly coriaceous, ovate; base obtuse to subcordate;
acumen to 7 mm long; nerves 10-12 slender but
prominent pairs, at 90 degree at base, c. 40-50 degrees towards
apex; first 3-6 pairs usually with prominent scale-like
domatia, the basal two pairs of which fused along the
midrib on each side; tertiary nerves very slender,
densely scalariform. sinuate, diagonal to nerves;
petiole slender, 1.5-2 cm long. Panicle to 15 cm long,
terminal or axillary, terete or slightly compressed,
slender; regularly singly or doubly branched, branchlets
long, lax, bearing to 18 secund flowers; bracts to 7
mm long, narrowly ovate, obtuse, pubescent on both
surfaces, fugaceous. Flower bud to 8 by 3.5 mm, ovoid
to lanceolate, acute. Calyx densely pale grey pubescent
outside, glabrous within; lobes subequal. acute,
slightly revolute towards the apices. Petals pale
yellow, narrowly lanceolate, obtuse, densely pubescent
on parts exposed in bud. Stamens 15, the 5 innermost
only slightly longest; filaments expanded at base,
abruptly narrowing and filiform distally; anthers
oblong, somewhat tapering; appendage to connective
c. 3 times length of anther, reaching 0.7 length of style,
glabrous. Ovary globose, shortly densely pubescent in
apical half, stylopodium indistinct; style over twice as
long as ovary, filiform, glabrous but for base. Fruit
calyx shortly pubescent towards base, glabrescent: 3
longer lobes to 12 by 2.3 cm, subequal, spatulate,
narrowly obtuse, c. 6 mm broad above the to 1.4 by
1.2 cm deltoid saccate thickened base; 2 shorter lobes
to 6.5 by 0.6 cm, unequal, linear but similar at base.
Nut to 2 by 1.4 cm, broadly ovoid, densely shortly pale
buff tomentose; style remnant short. [from Flora Malesiana]
In undisturbed mixed dipterocarp forests up to 600 m altitude. Usually found
on riversides with clayey to sandy fertile and well drained soils.
The timber is used.
Peninsular Malaysia, Sumatra, Borneo.
Borneo: Kenbewar, Kenuar, Longko, Majau, Merampu, Meranti merah, Meranti tanduk,
Palapak, Selangan pelandok, Seraya majau.
Malaysia: Meranti pepijat.