Aquilaria

Aquilaria is a genus of fifteen[1] species of trees, called lign aloes or lign-aloes trees, in the family Thymelaeaceae, native to southeast Asia. They occur particularly in the rainforests of Indonesia, Thailand, Cambodia, Laos, Vietnam, Malaysia, Northeast India, Bangladesh, the Philippines, Borneo and New Guinea. The trees grow to 6–20 m tall. The leaves are alternate, 5–11 cm long and 2–4 cm broad, with a short acuminate apex and an entire margin. The flowers are yellowish-green, produced in an umbel; the fruit is a woody capsule 2.5–3 cm long.

Aquilaria
Aquilaria sinensis leaves
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Thymelaeaceae
Subfamily: Thymelaeoideae
Genus: Aquilaria
Lam.

The genus is best known, together with Gyrinops, as the principal producer of the resin-suffused agarwood used in aromatic incense production, especially Aquilaria malaccensis.[1][2] The depletion of wild trees from indiscriminate cutting for agarwood has resulted in the trees being listed and protected as an endangered species.[1][2][3] Projects are currently underway in some countries in southeast Asia to infect cultivated Aquilaria trees artificially to produce agarwood in a sustainable manner.[3] In Indonesia, for example, there have been proposals to encourage the planting of gahara, as it is known locally, in eastern Indonesia, particularly in the province of Papua.[4]

Species
Aquilaria sinensis habitus
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References
  1. Ng, L.T., Chang Y.S. and Kadir, A.A. (1997) "A review on agar (gaharu) producing Aquilaria species" Journal of Tropical Forest Products 2(2): pp. 272-285
  2. Barden, Angela (2000) Heart of the Matter: Agarwood Use and Trade and CITES Implementation for Aquilaria malaccensis TRAFFIC International, Cambridge, ISBN 1-85850-177-6
  3. Broad, S. (1995) "Agarwood harvesting in Vietnam" TRAFFIC Bulletin 15:96
  4. Theresia Sufa, 'Gaharu: Indonesia's endangered fragrant wood', The Jakarta Post, 2 February 2010.
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