Intsia Thouars

Genus

Angiosperms > Fabales > Fabaceae

Characteristics

Trees often with buttresses. Stipules intrapetiolar, connate. Leaves paripinnate. Leaflets chartaceous to subcoriaceous, usually with 1 or 2 small crateriform glands at the basal part on lower surface; petiolules twisted. Inflorescences terminal or axillary, simply racemose, often fasciculate, or paniculate; bracts caducous. Flowers bisexual, zygomorphic. Hypanthium cupular, narrowly infundibuliform or cylindric. Calyx lobes 4. Petals: only 1 fully developed, flabellate, lower half narrowed into a claw, the others rudimentary or absent. Disk absent. Stamens 3 or very rarely 4 fertile; staminodes 4-7; filaments and staminodes connate at the base; anthers dorsifixed. Ovary stipitate (stipe adnate to the hypanthium except the apical part), puberulous; style slender; stigma small, capitellate. Pods oblong, rarely obcordate, straight or falcate, flattened, glabrous, dehiscent, 2-valved (valves leathery or slightly woody), often 3-(or more-)seeded. Seeds ovoid, oblong, discoid, or sublenticular, flattened, not arillate, scurfy, exalbuminous.
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Unarmed evergreen trees. Leaves simply paripinnate; stipules connate into a persistent intrapetiolar scale; petiolules twisted; leaflets opposite or subopposite, without translucent gland-dots, but glandular as in Afzelia on the leaflet surface on one or both sides of the base. Inflorescences simply racemose to paniculate; flowers spirally arranged along the inflorescence-axes; pedicels jointed at base; bracteoles ± well-developed and concavo-convex, ± concealing the young flower-buds; both bracteoles caducous before the flower opens. “Hypanthium ± elongate. Sepals and petals as in Afzelia. Stamens 3 fertile and 4–7 staminodes (fide Meijer Drees). Ovary as in Afzelia. Pods indehiscent or ultimately ± dehiscent; valves woody, but much thinner than in Afzelia, and ± venose outside. Seeds large, hard, exarillate.
Unarmed, evergreen trees. Leaves simply paripinnate; petiolules twisted; leaflets opposite or subopposite, without translucent gland dots, but usually with a dot-like gland on one or both sides of the base on the lower surface or on the margin. Stipules connate into a persistent intrapetiolar scale. Inflorescences simply racemose to paniculate. Flowers bisexual, spirally arranged along the inflorescence-axes; pedicels jointed basally; bracteoles ±concealing the young flower buds but falling before flower opens. Hypanthium ±elongate. Sepals 4, imbricate. Petal 1, large, clawed, the others rudimentary or absent. Fertile stamens 3; staminodes 4-7. Ovary stipitate; stipe adnate to the hypanthium; style long; stigma ±capitate. Pods indehiscent or ultimately ±dehiscent; valves woody. Seeds exarillate.
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Growth form tree
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Foliage retention evergreen
Sexuality hermaphrodite
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Hardiness (USDA) 9-12

Usage

UsesThe timber (international trade name merbau) has a wide range of uses both indoors and outdoors, the main source of merbau timber being Intsia palembanica. See Vink Ding Hou Blumea 38 1994 322-323 R.J.Johns et al. Soerianegara & Lemmens Pl. Res. SE Asia (PROSEA Handb.) 5(1), Major commercial timbers 1993 264-270
Uses timber
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Cultivation

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Images

Intsia unspecified picture

Distribution

Intsia world distribution map, present in Australia and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:22666-1
WFO ID wfo-4000019102
COL ID 638M3
BDTFX ID -
INPN ID 445960
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Intsia

Lower taxons

Intsia bijuga Intsia palembanica