Bruguiera gymnorhiza (L.) Lam.

Oriental mangrove (en)

Species

Angiosperms > Malpighiales > Rhizophoraceae > Bruguiera

Characteristics

Shrub or tree up to 7(15) m high; branches terete, smooth with subcircular scars of the petioles of the fallen leaves and annular scars of the fallen stipules; bark fibrous, light brown, reddish-brown or grey. Leaf-lamina usually 6-12 x 2-6 cm, narrowly to broadly elliptic or sometimes obovate-elliptic; apex acute, subacute or shortly acuminate; margins somewhat revolute; base narrowed into the petiole, cuneate or subcuneate; midrib rather prominent below, lateral nerves slightly prominent above and just visible to obscure beneath; petiole usually 1-3 cm long; stipules up to 4 x 1 cm, entire and involute, acute at the apex and truncate at the base. Flowers solitary, peduncles c. 1 cm long, ± terete, arching; flower-buds c. 27 x 7 mm, narrowly ellipsoid, acute, strongly ribbed, glabrous. Calyx pinkish-green to reddish-brown; calyx-tube 1-2 cm long, obconical; calyx-lobes (10)12(14), 1.5-2 cm long, triquetrous, narrow, very acute at the apex. Petals c. 1.5 cm long, ± oblong, conduplicate and costate inside, 2-lobed at the apex (the sinus with a median seta c. 4 mm long and the lobes c. 5 mm long, obtuse, apically 2-3-fimbriate), white or cream, soon turning brown, sparsely hirsute at the margins and densely hirsute at the base, coriaceous. Stamens (20)24(28), paired, oppositipetalous; filaments 6 or 8 mm long; anthers c. 6 mm long, mucronate at the apex. Ovary c. 4 mm long, (2)3(4)-locular; style c. 20 mm long, shortly (2)3(4)-lobed at the apex. Fruit a turbinate berry crowned by the calyx-lobes, unilocular, 1-seeded. Hypocotyl up to 15 cm long and 1.2 cm in diameter while on the tree, only narrowing a little at both extremities, shallowly and bluntly longitudinally ridged.
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Glabrous tree up to 12 m. tall (nearer half this height in our area), bark reddish-brown.. Leaves dark green; blade narrowly to broadly elliptic, 5–15 cm. long, subacuminate above to an acute apex, cuneate below to an acute base, petiole up to 3 cm. long.. Flowers solitary; peduncles recurved, about 1 cm. long; buds narrowly ellipsoid, terete, c. 25 × 10 mm.. Calyx pinkish-green to reddish-brown; tube 1–2 cm. long; lobes (10–) 12 (–15), linear, 1.8–2.0 cm. long, apex acute.. Petals white, soon turning brown, about 1.5 cm. long, conduplicate below, bifid with a median seta, stiffly pubescent, especially below; lobes 3–3.5 mm. long, (bi-or) tri-ciliate apically.. Anthers 4 mm. long, dorsifixed, mucronate above; filaments 6 or 8 mm. long (one shorter and one longer in each pair).. Ovary 3-celled.. Fruit turbinate, 2 cm. long.. Hypocotyl up to 11 cm. long on tree, terete or only shallowly and bluntly longitudinally ridged, swollen ± uniformly throughout length.. Fig. 3.
Trees 6-20 m tall, d.b.h. 30-60 cm. Bark gray, deeply fissured. Stipules often reddish, ca. 4 cm, interpetiolar, caducous. Petiole 2-4.5 cm; leaf blade elliptic-oblong, 8-21 × 4-7(-9) cm, leathery, glabrous, base cuneate to rarely obtuse, apex acute. Pedicel 1-2.5 cm. Flowers in axils of upper leaves, solitary, red or pinkish red, ca. 3 cm. Calyx lobes 10-14, linear, 1.5-2 cm, glabrous. Petals 12-14, 1.3-1.5 cm, outer margin fringed with white silky hairs; sinus bristles 3 or 4 per petal, 2-3 mm, distinctly exceeding petals. Stamens twice as many as petals, 8-11 mm; filaments filiform; anthers linear to lanceolate, 4-5 mm. Disk cup-shaped. Ovary inferior, 3-loculed; style filiform, ca. 1.5 cm; stigma lobes 3 or 4. Fruit adnate to calyx tube, ca. 2.5 mm; persistent calyx on fruit or hypocotyls ribbed only apically. Seed 1, viviparous. Hypocotyl cigar-shaped, slightly angular, 15-25 × 1.5-2 cm. Fl. May-Jun. 2n = 26.
Tree to 20 m high; bark dark grey; knee roots abundant. Leaves elliptic, acute; lamina 8–20 cm long, 3–9 cm wide; petiole 2–4 cm long; stipules often reddish. Flowers solitary, c. 3.5 cm long at anthesis; pedicel 1–2.5 cm long, recurved, red on at least one side. Hypanthium often reddish, not ribbed or indistinctly ribbed near top only. Sepals 10–16, linear-subulate, thick, pale pink to bright red. Petals c. 1.5 cm long, 2-lobed, white turning brown; margins and base pubescent; soft bristles 2 or 3 terminating each lobe, 1 in sinus. Anthers c. 4 mm long, mucronate. Hypocotyl 10–25 cm long, c. 1.5 cm wide, straight, terete or slightly ribbed, rounded at apex.
Evergreen, mangrove tree or shrub, 7-15 m high. Leaves opposite, oblong to elliptic, leathery. Flowers axillary, solitary. Calyx 8-15-lobed, leathery; tube turbinate; lobes linear-lanceolate. Petals as many as calyx lobes, oblong, concave, bifid, lobe and midrib produced into awns. Stamens twice as many as petals; filaments shorter than petals; anthers linear, hooked at apex. Ovary inferior, 2-4-locular, 2 ovules per locule. Flowering time Aug.-May. Fruit a turbinate, leathery berry, crowned with persistent calyx; 1-seeded by abortion. Seed pendulous, germinating before fruit-fall, developing a hypocotyl with longitudinal ridges.
Leaf-lamina usually 6–12 x 2–6 cm., narrowly to broadly elliptic or sometimes obovate-elliptic; apex acute, subacute or shortly acuminate; margins somewhat revolute; base narrowed into the petiole, cuneate or subcuneate; midrib rather prominent below, lateral nerves slightly prominent above and just visible to obscure beneath; petiole usually 1–3 cm. long; stipules up to 4 x 1 cm., entire and involute, acute at the apex and truncate at the base.
Petals c. 1·5 cm. long, ± oblong, conduplicate and costate inside, 2-lobed at the apex (the sinus with a median seta c. 4 mm. long and the lobes c. 5 mm. long, obtuse, apically 2–3-fimbriate), white or cream, soon turning brown, sparsely hirsute at the margins and densely hirsute at the base, coriaceous.
Shrub or tree up to 7(15) m. high; branches terete, smooth with subcircular scars of the petioles of the fallen leaves and annular scars of the fallen stipules; bark fibrous, light brown, reddish-brown or grey.
Hypocotyl up to 15 cm. long and 1·2 cm. in diameter while on the tree, only narrowing a little at both extremities, shallowly and bluntly longitudinally ridged.
Calyx pinkish-green to reddish-brown; calyx-tube 1–2 cm. long, obconical; calyx-lobes (10)12(14), 1·5–2 cm. long, triquetrous, narrow, very acute at the apex.
Flowers solitary, peduncles c. 1 cm. long, ± terete, arching; flower-buds c. 27 x 7 mm., narrowly ellipsoid, acute, strongly ribbed, glabrous.
Stamens (20)24(28), paired, oppositipetalous; filaments 6 or 8 mm. long; anthers c. 6 mm. long, mucronate at the apex.
Ovary c. 4 mm. long, (2)3(4)-locular; style c. 20 mm. long, shortly (2)3(4)-lobed at the apex.
Fruit a turbinate berry crowned by the calyx-lobes, unilocular, 1-seeded.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 11.0 - 20.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

Characteristic of the landward side of mangroves, usually growing on somewhat dry, well-aerated soil. It often ascends tidal parts of rivers. Sometimes it forms pure stands, but often it is associated with Rhizophora species.
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Common in closed mangrove forests.
Light -
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Hardiness (USDA) 9-12

Usage

See Beasley (2009: 208). Bruguiera gymnorhiza features on a Christmas Island 43c postage stamp as part of a Christmas Island trees stamp set issued in 1991.
Uses animal food charcoal dye environmental use fiber food fuel invertebrate food material medicinal social use timber wood
Edible barks fruits leaves
Therapeutic use Hypotension (aerial part), Astringents (bark), Diarrhea (bark), Malaria (bark), Astringents (fruit), Astringent (unspecified), Anti-infective agents, local (unspecified), Cardiovascular system (whole plant excluding root)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
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Germination temperacture (C°) -
Germination luminosity -
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Minimum temperature (C°) -
Optimum temperature (C°) -
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Images

Leaf

Bruguiera gymnorhiza leaf picture by Maarten Vanhove (cc-by-sa)
Bruguiera gymnorhiza leaf picture by Maarten Vanhove (cc-by-sa)
Bruguiera gymnorhiza leaf picture by Maarten Vanhove (cc-by-sa)

Flower

Bruguiera gymnorhiza flower picture by Maarten Vanhove (cc-by-sa)

Fruit

Bruguiera gymnorhiza fruit picture by Daniel Barthelemy (cc-by-nc)
Bruguiera gymnorhiza fruit picture by Noel Dionson (cc-by-sa)

Distribution

Bruguiera gymnorhiza world distribution map, present in American Samoa, Australia, Bangladesh, Brunei Darussalam, China, Ethiopia, Fiji, Micronesia (Federated States of), Guam, Indonesia, India, Kenya, Cambodia, Kiribati, Sri Lanka, Madagascar, Maldives, Marshall Islands, Myanmar, Northern Mariana Islands, Mozambique, Malaysia, Mayotte, Nauru, Pakistan, Philippines, Palau, Papua New Guinea, Sudan, Singapore, Somalia, Seychelles, Thailand, Tonga, Taiwan, Province of China, Tanzania, United Republic of, United States of America, Viet Nam, Wallis and Futuna, Samoa, and South Africa

Conservation status

Bruguiera gymnorhiza threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:719532-1
WFO ID wfo-0000572747
COL ID 5X536
BDTFX ID -
INPN ID 673481
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Bruguiera gymnorhiza f. alba Bruguiera capensis Bruguiera conjugata Bruguiera rheedei Rhizophora rheedei Bruguiera rumphii Bruguiera wightii Bruguiera zippelii Rhizophora conjugata Rhizophora gymnorhiza Bruguiera rhedii Rhizophora palun Rhizophora tinctoria Bruguiera zippelii var. oblongifolia Bruguiera gymnorhiza var. palun Bruguiera conjugata f. alba Bruguiera gymnorhiza