Pond Spice

Scientific Name : Litsea glutinosa (Lour.) C. B. Rob.
Common Name : Pond Spice
Chinese Name : 潺槁樹, 潺槁木薑子, 油槁樹, 膠樟
Family : LAURACEAE
Local distribution status : Native species

Anecdotes on plants

Origins Guangdong, Guangxi, Yunnan, Hainan and Fujian Provinces of China. It is also distributed throughout Southeast Asia.
Meaning of names When first looking at its Chinese name, you may not know how to pronounce the Chinese characters “潺槁”. But if you think of the adjective “滑潺潺” in Chinese, perhaps you may know the pronunciation of these two characters. Their Cantonese pronunciation are “saan4 gou2 (僝稿)”. Because the sap of this species is slimy (“滑潺潺”), glue-like in texture, so it is given the Chinese names “Slimy Tree (潺槁樹)” and “Glutinous Camphor Tree (膠樟)”. Being a plant under the genus Litsea (木薑子), the species is also known as “Glutinous Litsea 潺槁木薑子” in Chinese. The species epithet “glutinosa” in its scientific names also has the meaning of “viscous”, which refers to the aforementioned character. Interestingly, this sticky sap can actually be used as an adhesive, as a natural glue.
Applications The wood of the Pond Spice is yellowish brown, sturdy and resistant to rot, which can be made into furniture. Its seeds have a high oil content, that can be made into soaps and hardened oil. Furthermore, applied in Traditional Chinese Medicine, its leaves, bark and roots exhibit the functions of relieving pains and treating tramatic injuries.
Ecology The Pond Spice is a common native plant in Hong Kong. It is often found along forest edges, stream banks and in shrublands. The Pond Spice is also a host plant for butterflies such as the Common Bluebottle (Graphium sarpedon (Linnaeus, 1758)), the Common Mime (Chilasa clytia (Linnaeus, 1758)) and the Tawny Rajah (Charaxes bernardus (Fabricius, 1793)).

Traits for identification

Growing habit Evergreen tree.
Height To 15 m.
Stems Bark of trunk grey to greyish brown, mucilaginous. Branchlets greyish brown, grey-yellow tomentose when young.
Leaves Shape of leaves highly variable. Obovate, obovate-oblong to elliptic-lanceolate, apex obtuse to rounded, base cuneate, obtuse to suborbicular. Leathery to thinly leathery, alternate. Tomentose on both surfaces when young, only adaxial midvein slightly tomentose when old. Pinninerved, lateral veins 5 to 12 pairs. Midveins and lateral veins conspicuously raised abaxially. Petioles and surface of bud scales grey-yellow tomentose. Buds ovoid to conical.
Flowers Unisexual and dioecious. Inflorescences axillary on the upper part of branchlets, single or several inflorescence(s) clustered on short branchlets. Several flowers on each inflorescence. Perianth segments imperfect or lacking. Pedicels and peduncles grey-yellow tomentose.
Fruits Drupe globose, dark brown to black when mature. Pedicels slightly thickened at apex.
Flowering period May to June in Hong Kong.
Fruiting period September to October in Hong Kong.
Remarks

Scientific name above is based on Hong Kong Herbarium website : https://www.herbarium.gov.hk/en/hk-plant-database/plant-detail/index.html?pType=species&oID=4439

Scientific names from other databases
Flora of China : Litsea glutinosa (Loureiro) C. B. Robinson
Plants of the World Online : Litsea glutinosa (Lour.) C.B.Rob.

Reference