Aquilaria sinensis

 

 

Aquilaria sinensis - Wikipedia

 

학명 : Aquilaria sinensis (Lour.) Gilg

분류 :Thymelaeaceae

 

 

 

사진 : 2023.01.31 대전한밭수목원

 

 

 

 

 

 

 

 

 

 

Aquilaria sinensis is a species of plant in the family Thymelaeaceae. It is endemic to China. It is threatened by habitat loss. This medicinal plant is a source of fragrant wood, formed under a pathological condition, called Chen Xiang (Chinese: 沉香) in Standard Mandarin, or chàhm hēung in Cantonese, or agarwood.

 

Description

Aquilaria sinensis is an evergreen tree, 6 to 20 m tall. The smooth bark is grayish to dark grey, and the wood is white to yellowish – so giving it another Chinese name “Pak Muk Heung” (White Wood Incense). Its branchlets are sparsely covered with hairs when young. Its leaves are alternate, leathery, obovate to elliptic, generally 5 to 11 cm long and 2 to 4 cm wide, with 15 to 20 pairs of inconspicuous and nearly parallel lateral veins which is a helpful diagnostic feature in the field. The apex of each leaf is short acuminate and the base is broadly cuneate, with entire and smooth margins. Its flowers are yellowish green, fragrant, in a terminal or axillary umbel. The fruit is a woody obovoid capsule with an outer covering of short grey hairs, 2.5 to 3 cm long, opening in two flat valves when ripen. When the fruit is open, a silky thread from the base of the fruit holds the single seed (or two) in the air.

https://en.wikipedia.org/wiki/Aquilaria_sinensis

 

 

 

FOC

 

Aquilaria sinensis (Loureiro) Sprengel, Syst. Veg. 2: 356. 1825.

土沉香 tu chen xiang

 

Ophispermum sinense Loureiro, Fl. Cochinch. 1: 281. 1790; Agallochum sinense (Loureiro) Kuntze; Aquilaria grandiflora Bentham; A. ophispermum Poiret.

 

Trees 5-15 m tall. Bark dark gray, smooth; branchlets terete, rugose, puberulous, glabrescent. Petiole 5-7 mm, pubescent; leaf blade dark or purple-green, glossy adaxially, light green abaxially, orbicular or elliptic to oblong, sometimes obovate, 5-9 × 2.8-6 cm, leathery, both surfaces glabrous, but sometimes puberulous along margin, base broadly cuneate, apex acuminate or acute, apiculate; lateral veins 15-20 pairs, more conspicuous abaxially, veins and veinlets slender, subparallel, obscure. Inflorescence terminal, a loose panicle of umbels, many flowered. Flowers fragrant at night; pedicel 5-10 mm, densely yellow-gray pubescent. Calyx yellowish green; tube narrowly campanulate, 5-6 mm, exterior and interior densely pubescent; lobes 5, ovate, 3-5 mm, both surfaces pubescent, apex rounded and obtuse, or acute. Petaloid appendages 10, scalelike, inserted at throat of tube, obviously densely pilose at anthesis. Stamens 10; filaments ca. 1 mm; anthers linear-oblong, ca. 1.5 mm. Ovary ovoid, densely grayish white hairy; style obsolete or nearly so; stigma capitate. Capsule shortly stipitate, ovoid, 2-3 × ca. 2 cm, densely yellow pubescent, base tapering, apex apiculate; pericarp thin, smooth when dried. Seeds dark brown, ovoid, ca. 10 × 7.5 mm, white sericeous or glabrous; funicle conspicuous, ca. 1.5 × 0.4 cm, longer than seed, tapered at base, broad and compressed below seed. Fl. spring-summer, fr. summer-autumn.

 

● Lowland forests, sunny places on slopes or along roadsides. Fujian, Guangdong, Guangxi, Hainan.

 

Aquilaria sinensis has been very heavily exploited and is listed as vulnerable by the IUCN. The bark is used to make paper; the heart wood is prized for its fragrance.

 

 

 

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https://normanswords.blogspot.com/2019/04/aquilaria-sinensis.html