Mallotus peltatus (Geiseler) Mull.Arg., Linnaea 34 (1865)
Latin for 'peltate', referring to the leaf
Adisca acuminata Blume
Aleurites peltatus Geiseler
Hancea muricata Benth.
Mallotus acuminatus (Blume) Mull.Arg.
Mallotus alternifolius Merr.
Mallotus camiguinensis Merr.
Mallotus columnaris Warb.
Mallotus furetianus Mull.Arg.
Mallotus helferi Mull.Arg.
Mallotus lambertianus Mull.Arg.
Mallotus longifolius (Reichb.f. & Zoll.) Mull.Arg.
Mallotus longifolius var. genuinus Mull.Arg.
Mallotus longifolius var. pubescens Mull.Arg.
Mallotus maclurei Merr.
Mallotus oblongifolius (Miq.) Mull.Arg.
Mallotus oblongifolius var. genuinus Pax & K.Hoffm.
Mallotus oblongifolius var. helferi (Mull.Arg.) Pax & K.Hoffm.
Mallotus oblongifolius var. rubriflorus Chakrab.
Mallotus oblongifolius var. siamensis Pax & K.Hoffm.
Mallotus oblongifolius var. villosulus Pax & K.Hoffm.
Mallotus odoratus Elmer
Mallotus peekelii Pax & K.Hoffm.
Mallotus peltatus var.rubriflorus Chakrab.
Mallotus porterianus Mull.Arg.
Mallotus puberulus Hook.f.
Mallotus stylaris Mull.Arg.
Mallotus tenuispicus Pax & K.Hoffm.
Mappa acutifolia (Hassk.) Zoll. & Moritzi
Rottlera acuminata (Blume) Baill.
Rottlera acutifolia Hassk.
Rottlera flavigutta Miq.
Rottlera lambertiana (Mull.Arg.) Scheff.
Rottlera longifolia Reichb.f. & Zoll.
Rottlera oblongifolia Miq.
Rottlera stylaris (Mull.Arg.) Scheff.
Shrub up to 8(-21) m tall and 12(-30) cm dbh. Stipules ca. 4 mm long, dropped early.
Leaves alternate, simple, penni-veined, glabrous, often with domatia in
secondary vein axils, several nectary glands at base of upper leaf surface.
Flowers ca. 4 mm diameter, white-yellowish, placed in racemes. Fruits ca. 14 mm
diameter, green-red, 3-lobed, spiny, dehiscent capsules.
Shrubs to small trees up to 15(-21) m tall, dbh up to 30 cm; bole fluted, twisted to slanting;
crown branching freely, wide spreading to rounded pyramidal. Outer bark smooth to fissured,
lenticellate, mottled. Indumentum sparse to dense, whitish to cream. Branches lenticellate,
glabrescent, gland-dotted on young parts. Stipules early caducous, triangular to ovate, 1.8-5
by 0.7-1.5 mm, margin entire to irregular, apex acute, hairy abaxially only, gland-dotted or
not. Leaves alternate to apically subopposite, not peltate to peltate (sometimes both in one
individual), distance between leaf blade base and petiole insertion 2-17 mm; petiole 4-110 by
0.5-1.5 mm, constricted to thickened basally and apically, hairy, especially basally and apically,
glabrescent, gland-dotted or not, especially basally and apically; blade ovate to obovate,
3.5-21(-29) by 1-10(-13) cm, length-width ratio (1.3-)2-4, base attenuate to cordate, margin
(slightly) dentate to irregularly wavy (to slightly crenate), marginal glands 10-28 per leaf
side, apex acuminate to cuspidate to aristate, upper surface smooth (to pustulose), glabrous
to hairy, especially on veins, sparsely gland-dotted or not, especially along veins, basal
macular glands 2-7(-13) on veins, 1.5-14(-21) mm from petiole or midrib, apical macular glands
0-8 on veins, 1-9 mm from margin, lower surface smooth, hairy, especially on veins, glabrescent,
gland-dotted or not, domatia present usually with hair tufts; venation pinnate to triplinerved to
palmate, when peltate 8-10 veins originating from petiole insertion, 5-13 secondary veins per side
along midrib, ending parallel to the margin. Staminate inflorescences up to 24 cm long, basally
0.5-1.5 mm thick, rarely grouped, hairy, gland-dotted, nodes up to 38(-70) per inflorescence,
flowers 1-12 per node; bracts early caducous, deltoid to ovate, 0.9-2.3 by 0.4-1.2 mm, margin
entire to irregular, apex rounded to acute, hairy abaxially only, gland-dotted outside only,
especially basally; buds globose to ovate with acute to acuminate apex, glabrous to hairy,
gland-dotted or not. Staminate flowers 3-6 mm in diameter, whitish green to cream to reddish,
fragrant; pedicels 0.6-3 mm long, glabrous to hairy, gland-dotted or not; sepals 3-5, free to
basally connate, (triangular to) elliptic (to obovate), often recurved, 1.5-2.5 by 0.5-1.3 mm,
margin entire to irregular, apex acute to acuminate, glabrous to hairy abaxially only, gland-dotted
or not; stamens up to 50; filaments 1-3.5 mm long, glabrous, sometimes gland-dotted; anthers
0.2-0.3 by 0.3-0.5 mm; connective widened, sometimes with protruding apex. Pistillate
inflorescences up to 28 cm long, basally 1-2.8 mm thick, hairy, glabrescent, gland-dotted, nodes
up to 29 per inflorescence; bracts caducous (to persistent), ovate, cup-shaped, half surrounding
the pedicel, 1-2.8 by 0.7-1.5 mm, margin entire to irregular, apex acute, hairy abaxially only,
gland-dotted or not. Pistillate flowers green to (light) yellow to yellow-red, fragrant; bracteoles
absent to caducous, triangular to ovate, 0.8-1.3 by 0.3-0.6 mm, margin entire to irregular, apex
acute, hairy abaxially only, gland-dotted outside only; pedicels 1-7 mm long, glabrous to hairy,
gland-dotted or not; calyx caducous, lobes (1-)2-3(-4), free to more or less connate, triangular
to ovate, 0.5-4.5 by 0.2-2.3 mm, margin entire to irregular, apex acute to acuminate, hairy
abaxially only, gland-dotted or not; ovary (2-)3(-4)-locular, echinate, glabrous to hairy, densely
gland-dotted, spines up to 5 mm long, hairy, usually ending in a few long hairs, rarely gland-dotted
basally; style 2-7 mm long, glabrous to hairy, gland-dotted or not; stigmas 3-7 mm long, densely
covered with granulate papillae on the inside, glabrous to hairy abaxially, gland-dotted outside.
Fruit an echinate, lobed capsule, 7-15 by 5.5-8 mm, purple tinged to dark red, glabrous to hairy,
densely gland-dotted; carpel inside hairy, gland-dotted or not; column 4-6 by 4-6.5 mm. Seeds
glossy, roughly globose, 4-6 by 3-5 by 3-5.5 mm; hilum deltoid, 1-2.5 by 1-2.5 mm.
[from Flora Malesiana]
Locally common in primary to secondary forests, preferring open places like river banks,
forest edges, road sides, cleared areas, but sometimes also found in the forest understorey;
both in wet (riverine, swampy) areas and on well drained soils; soils include thick humus,
limestone, sandstone, sandy clay, sandy loam soil, volcanic rock, gravel, red shale. Altitude:
up to 1000(ĘC1800) m.
From India and South China to New Guinea.