Irina tomentosa | ICRAF Database

Taxonomy

Species:: Irina tomentosa Blume
Genus:: Irina
Family:: Sapindaceae

Synonym(s)

Common Names

Botanic

A medium-sized to fairly large tree up to 40(-47) m tall, with bole up to 100(-140) cm in diameter. Leaves with 3-13 pairs of leaflets having dentate margins, and alternate secondary veins ending in a tooth. Inflorescence and calyx often hairy. P. pinnata is an extremely variable species. No less than 8 forms have been recognized and given taxonomic status, but because still other and intermediate forms are encountered, this distinction is probably only useful in e.g. breeding. For reasons of completeness the 8 forms distinguished are given here : f. pinnata (synonym: P. coriacea Radlk., 1913); f. acuminata (Hook.f.) Jacobs (synonyms: P. acuminata (Hook.f.) Radlk., 1877, P. annamica Gagn., 1947); f. alnifolia (Blume) Jacobs (synonym: P. alnifolia (Blume) Radlk., 1877); f. cuspidata (Blume) Jacobs; f. glabra (Blume) Jacobs (synonym: P. pinnata var. javanica Koord. & Valeton, 1903); f. macrocarpa (Kurz) Jacobs (synonym: P. macrocarpa Kurz, 1875); f. repandra Jacobs; f. tomentosa (Blume) Jacobs (synonym: P. tomentosa (Blume) Teijsm. & Binnend., 1866).

Biology

Bisexual and male flowers are reported to occur on a single tree of P. pinnata, but the structurally hermaphrodite flowers are functionally female with no anther dehiscence. Both cross-fertilization and self-fertilization occur. Usually there are 3-4 times as many male as female flowers. Dispersal of the fruits is probably mostly by bats and birds.

Habitat

P. pinnata occurs in primary and secondary forests.

Uses and Function

Food: The tree is sometimes cultivated for its fruits which can have a thick and sweet-tasting arillode. The seeds are also edible. Fuel: The wood is also used for charcoal production. Medicine: The leaves and bark are used medicinally. Timber: The timber is used as kasai.

Wood Density

19 rows


0.8	0.94	1.01	0.9400		Ginoga, B., Hadjib N. and Karna sudjirdja S. 1982. Sifat Fisis dan Mekanis Beberapa Jenis Kayu Indonesia Bagian 10. Laporan BPHH No. 162	Jambi, Indonesia
0.5	0.77	0.99	0.7700	15	Martawijaya A., et al. 1992. Indonesian Wood Atlas Vol. I. AFPRDC, AFRD, Dept. of Forestry, Bogor, Indonesia	Bengkulu, Aceh, Sulawesi Utara, Sulawesi Tengah (Indonesia)
0.54		0.91	0.7250		Nguyen Ngoc Chinh et al. 1996. Vietnam Forest Trees. Forest Inventory and Planning Institute, Agricultural Publishing House, Hanoi	Vietnam
0.77		0.87	0.8200		Direktorat Bina Program Kehutanan. 1982. Jenis-Jenis Pohon disusun Berdasarkan Nama Daerah dan Nama Botaninya Buku 3. Jambi	Jambi, Sulawesi Tenggara, Sulawesi Selatan, Lampung, Irian Jaya (Indonesia)
	0.594		0.5940		Bolza, E. 1975. Properties and uses from 175 timber species from Papua New Guinea and West Irian. C.S.I.R.O. Division of Building Research Report 34.	Australia/PNG (tropical)
	0.594		0.5940		Bolza, E. 1975. Properties and uses from 175 timber species from Papua New Guinea and West Irian. C.S.I.R.O. Division of Building Research Report 34.	Australia/PNG (tropical)
	0.65		0.6500		Desch, H.E. 1996. Timber: structure, properties, conversion and use. 7th Edition. Palgrave Macmillan, New York.	South-East Asia (tropical)
	0.76		0.7600		Ginoga, B., Hadjib N. and Karna sudjirdja S. 1982. Sifat Fisis dan Mekanis Beberapa Jenis Kayu Indonesia Bagian 10. Laporan BPHH No. 162	South-East Asia (tropical)
	0.58		0.5800		Nguyen Ngoc Chinh et al. 1996. Vietnam Forest Trees. Forest Inventory and Planning Institute, Agricultural Publishing House, Hanoi	South-East Asia (tropical)
	0.62		0.6200		Soerjanegara and Lemmens, R.H.M.J. (Editors), 1994. PROSEA 5(1): Timber trees: Major commercial timbers.	South-East Asia (tropical)
	0.77		0.7700		Jenis-Jenis Pohon Disusun Berdasarkan Nama Daerah dan Nama Botaninya, Buku 18 A, Kalimantan Tengah	Central Kalimantan
	0.77		0.7700		Jenis-Jenis Pohon Disusun Berdasarkan Nama Daerah dan Nama Botaninya, Buku 10, Maluku	Maluku
0.64	0.8	0.92	0.8000	15	Martawijaya A., et al. 1992. Indonesian Wood Atlas Vol. I. AFPRDC, AFRD, Dept. of Forestry, Bogor, Indonesia
	0.526		0.5260		Cheng, J.C., Yang, J. and Liu, P. 1992. Anatomy and Properties of Chinese Woods. Chinese Forestry Publishing, Beijing, China. 820 pp.	China
	0.551		0.5510		Cheng, J.C., Yang, J. and Liu, P. 1992. Anatomy and Properties of Chinese Woods. Chinese Forestry Publishing, Beijing, China. 820 pp.	China
	0.67		0.6700		Desch, H.E. 1996. Timber: structure, properties, conversion and use. 7th Edition. Palgrave Macmillan, New York.	South-East Asia (tropical)
	0.64		0.6400		Martawijaya, A. et al. 1992. Indonesian Wood Atlas Vol. I. and II AFPRDC AFRD Department of Forestry Bogor Indonesia.	South-East Asia (tropical)
	0.86		0.8600		Jenis-Jenis Pohon Disusun Berdasarkan Nama Daerah dan Nama Botaninya, Buku 18 A, Kalimantan Tengah	Central Kalimantan
	0.8		0.8000		Jenis-Jenis Pohon Disusun Berdasarkan Nama Daerah dan Nama Botaninya, Buku 10, Maluku	Maluku

Rows per page

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Statistic Summary of Wood Density (g/cm³)

N: 19
Mean: 0.7074
Median: 0.7250
Mode: 0.7700
Stdv: 0.1150
Variance: 0.0132
Range: [0.526, 0.94]

Cumulative Distribution Plot

If the Moisture Content column is undefined, you may assume the value of 15%
The statistic summary is based on data availability in the database, thus it may change upon the data collection updates

Open the Wood Density page for this species →

Irina tomentosa Blume

Properties

Cultivation and Marketing

Variable

Statistic Summary of Wood Density (g/cm³)