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Created page with "{{PROSEAUpperbar}} {{DISPLAYTITLE:''Dipterocarpus gracilis'' (PROSEA)}} <big>''Dipterocarpus gracilis'' Blume</big> __NOTOC__ :Protologue: Bijdr. fl. Ned. Ind. 5: 224 (18..."
{{PROSEAUpperbar}}
{{DISPLAYTITLE:''Dipterocarpus gracilis'' (PROSEA)}}
<big>''[[Dipterocarpus gracilis]]'' Blume</big>
__NOTOC__
:Protologue: Bijdr. fl. Ned. Ind. 5: 224 (1825).
== Synonyms ==
''Dipterocarpus pilosus'' Roxb. (1832), ''Dipterocarpus marginatus'' Korth. (1841), ''Dipterocarpus vernicifluus'' (Blanco) Blanco (1845).
== Vernacular names ==
*Brunei: keruing kesat
*Indonesia: keruing keladan (general), wuluk bulan (Java), damar kacawai (southern Sumatra)
*Malaysia: keruing kesat (general), keruing kesugoi (Sabah)
*Philippines: panau (general), agan-an (Bikol), lalian (Tagalog)
*Burma: kanyin, kanyin-ni
*Thailand: yang-sian (general), yang-daeng (south-eastern), yung-hua-waen (peninsular).
== Distribution ==
Bangladesh, Burma, Thailand, Peninsular Malaysia, Sumatra, West Java, Borneo and the Philippines.
== Uses ==
''D. gracilis'' is an important source of keruing, especially in Indo-China. A wood-oil can be obtained from the bole and is used as a varnish and for illumination.
== Observations ==
A large tree of up to 50 m tall, bole branchless for 30 m or more, cylindrical, up to 180 cm in diameter, buttresses small to large, rounded, bark surface reddish-brown, older patches pink-brown or grey, outer bark grey-brown, inner bark reddish-brown, brittle, sapwood ochre; buds narrowly conical, scabrid rufous tomentose; leaves elliptical to ovate, 8-15 cm × 4-10 cm, base obtuse, apex shortly acuminate, with 12-20 pairs of secondary veins, petiole 2-2.5 cm long, stipules narrowly lanceolate, outside persistently rufous tomentose; stamens about 30; fruit calyx tube spherical, glabrous, smooth, 2 larger fruit calyx lobes up to 14 cm × 2.5 cm, 3 shorter ones up to 2 cm × 1 cm. ''D. gracilis'' is widespread, often occurring gregariously in seasonal semi-evergreen or evergreen dipterocarp forest on red soils, becoming scattered, rare, and confined to fertile red soils in the humid zones, up to 800 m altitude. The density of the wood is 580-1000 kg/m<sup>3</sup>at 15% moisture content. See also the table on wood properties. A natural hybrid between ''D. gracilis'' and ''D. costatus'' has been observed in Thailand and Peninsular Malaysia.
== Selected sources ==
30, 31, 35, 102, 140, 175, 235, 253, 258, 264, 318, 461, 472, 476, 483, 497, 579, 628, 677, 737, 748.
[[Category:Timbers (PROSEA)]]
[[Category:PROSEA]]
{{DISPLAYTITLE:''Dipterocarpus gracilis'' (PROSEA)}}
<big>''[[Dipterocarpus gracilis]]'' Blume</big>
__NOTOC__
:Protologue: Bijdr. fl. Ned. Ind. 5: 224 (1825).
== Synonyms ==
''Dipterocarpus pilosus'' Roxb. (1832), ''Dipterocarpus marginatus'' Korth. (1841), ''Dipterocarpus vernicifluus'' (Blanco) Blanco (1845).
== Vernacular names ==
*Brunei: keruing kesat
*Indonesia: keruing keladan (general), wuluk bulan (Java), damar kacawai (southern Sumatra)
*Malaysia: keruing kesat (general), keruing kesugoi (Sabah)
*Philippines: panau (general), agan-an (Bikol), lalian (Tagalog)
*Burma: kanyin, kanyin-ni
*Thailand: yang-sian (general), yang-daeng (south-eastern), yung-hua-waen (peninsular).
== Distribution ==
Bangladesh, Burma, Thailand, Peninsular Malaysia, Sumatra, West Java, Borneo and the Philippines.
== Uses ==
''D. gracilis'' is an important source of keruing, especially in Indo-China. A wood-oil can be obtained from the bole and is used as a varnish and for illumination.
== Observations ==
A large tree of up to 50 m tall, bole branchless for 30 m or more, cylindrical, up to 180 cm in diameter, buttresses small to large, rounded, bark surface reddish-brown, older patches pink-brown or grey, outer bark grey-brown, inner bark reddish-brown, brittle, sapwood ochre; buds narrowly conical, scabrid rufous tomentose; leaves elliptical to ovate, 8-15 cm × 4-10 cm, base obtuse, apex shortly acuminate, with 12-20 pairs of secondary veins, petiole 2-2.5 cm long, stipules narrowly lanceolate, outside persistently rufous tomentose; stamens about 30; fruit calyx tube spherical, glabrous, smooth, 2 larger fruit calyx lobes up to 14 cm × 2.5 cm, 3 shorter ones up to 2 cm × 1 cm. ''D. gracilis'' is widespread, often occurring gregariously in seasonal semi-evergreen or evergreen dipterocarp forest on red soils, becoming scattered, rare, and confined to fertile red soils in the humid zones, up to 800 m altitude. The density of the wood is 580-1000 kg/m<sup>3</sup>at 15% moisture content. See also the table on wood properties. A natural hybrid between ''D. gracilis'' and ''D. costatus'' has been observed in Thailand and Peninsular Malaysia.
== Selected sources ==
30, 31, 35, 102, 140, 175, 235, 253, 258, 264, 318, 461, 472, 476, 483, 497, 579, 628, 677, 737, 748.
[[Category:Timbers (PROSEA)]]
[[Category:PROSEA]]