Japanese Camellia, Camellia

Scientific Name : Camellia japonica L.
Common Name : Japanese Camellia, Camellia
Chinese Name : 山茶、洋茶、茶花、晚山茶、耐冬、山椿、藪春、曼佗羅、野山茶
Family : THEACEAE
Local distribution status : Exotic species

Anecdotes on plants

Origins Native to South Japan and South Korea, it is also distributed in some provinces of China, including Sichuan, Jiangxi, Shandong, eastern Zhejiang and Taiwan.
Meanings of name The generic name Camellia commemorates the 17th-century Moravian Jesuit missionary and naturalist Georg Joseph Kamel (1661-1706). The specific epithet japonica means ‘of or from Japan’.
Vitality Japanese Camellia prefers semi-shade environments and well-drained soils with a neutral to acidic pH.
Ecology Usually grows in forests at altitudes of 300-1100 m and is widely cultivated in gardens.
Application Japanese Camellias are traditionally used to produce tea and essential oils and are cultivated extensively as ornamental plants worldwide. There are currently more than 23,000 recognized cultivars of Japanese Camellias. The three main colors of Japanese Camellia include red, light red, and white, with most having double petals. In addition, various studies verify that the extracts obtained from different sections of Japanese Camellia exhibit several bioactivities that have positive impacts on human health.
Theaceae

Japanese Camellia (Camellia japonica) and Hong Kong Camellia (Camellia hongkongensis): Both trees are members of the genus Camellia. They can be distinguished by observing their branches and filaments. The branches of Japanese Camellia are greyish brown, while those of Hong Kong Camellia are reddish brown. The filaments of Japanese Camellia are white, whereas those of Hong Kong Camellia are red.

Traits for identification

Growing habit Shrub or small tree.
Height To 9 m tall.
Stem Branches and branchlets greyish brown, glabrous.
Leaves Petiole glabrous or adaxially pubescent; leaves leathery; leaf blade oblong or obovate-oblong; base cuneate to broadly cuneate, margin serrulate, apex shortly acuminate or acute. Midvein yellowish green, thick, and elevated on both surfaces; lateral veins 7-8 on each side of midvein.
Flower Flowers axillary or subterminal, solitary or paired, subsessile; petals rose or white, silky-pubescent abaxially; stamens many.
Fruit Capsule globose, 3-loculed with 1 or 2 seeds per locule; pericarp thick when dry, woody.
Seed Seed brown, semiglobose to globose, glabrous.
Flowering period January to March 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=7155

 

Scientific Names from Other Databases

Flora of China: Camellia japonica L.

GBIF: Camellia japonica L.

Reference
  1. Dave's Garden. (2021). Camellia. Davesgarden.com. [Online Edition]. Retrieved 17th August 2023, from:
    https://davesgarden.com/sitewidesearch.php?q=Camellia+#b
  1. Dave's Garden. (2021). Japonica. Davesgarden.com. [Online Edition]. Retrieved 17th August 2023, from: https://davesgarden.com/sitewidesearch.php?q=japonica&Search=Search
  2. eFloras. (2008). Camellia japonica Linnaeus, Sp. Pl.  Flora of China [Online Edition]. Retrieved 26th February 2024, from: http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200014034[1] [2] 
  3. Global Biodiversity Information Facility.  (2022). Camellia japonica L. US National Plant Germplasm System. [Online Edition]. Retrieved 26th February 2024, from https://www.gbif.org/species/3189636
  4. Hong Kong Herbarium, Agriculture, Fisheries and Conservation Department and South China Botanical Garden, Chinese Academy of Sciences. (2007-2011). Camellia japonica L.  山茶. Flora of Hong Kong. [Online Edition]. Retrieved 26th February 2024, from https://www.herbarium.gov.hk/en/hk-plant-database/plant-detail/index.html?pType=species&oID=7155
  5. NC State. (2022). Camellia japonica. NC State University and North Carolina Agricultural and Technical State University. [Online Edition]. Retrieved 26th February 2024, from https://plants.ces.ncsu.edu/plants/camellia-japonica/
  6. Pereira, A. G., Garcia-Perez, P., Cassani, L., Chamorro, F., Cao, H., Barba, F. J., Simal-Gandara, J., & Prieto, M. A. (2022). Camellia japonica: A phytochemical perspective and current applications facing its industrial exploitation. Food Chemistry: X, 13, 100258. https://doi.org/10.1016/j.fochx.2022.100258
  7. Wang, Y., Zhuang, H., Shen, Y., Wang, Y., & Wang, Z. (2021). The Dataset of Camellia Cultivars Names in the World. Biodiversity Data Journal, 9. https://doi.org/10.3897/bdj.9.e61646
  8. 中國科學院植物誌編輯委員會。(1959-2004)。〈山茶 Camellia japonica L.〉。《中國植物誌》。[網上版本]。於2024年2月26日擷取自:https://www.iplant.cn/info/Camellia%20japonica?t=foc
  9. 歐陽卓立。(2017)。《香港觀賞樹木彙編3》。自然探索學會。國際標準書號:978-988-15468-6-9。p.p. 356-363