Nepedia
Back to Discover
Advanced Reader
🧬

Camellia

life science Maturity 11-13 Next article →

The genus *Camellia* represents a diverse group of flowering plants within the family Theaceae.

These plants are primarily found in the tropical and subtropical regions of eastern and southern Asia. Their natural range extends from the Himalayas eastward to Japan and Indonesia. Most species are concentrated in southern China and Indochina. Camellias serve many roles in human society. They are grown as ornamental garden plants, sources of tea, and producers of woody oils.

Camellia sinensis MHNT.BOT.2016.12.24
Camellia sinensis MHNT.BOT.2016.12.24

There are more than 220 described species in this genus. Humans have cultivated over 26,000 cultivars, which include more than 51,000 registered names.

Physically, camellias are evergreen plants with broad leaves. They can grow as small shrubs or as large trees reaching 10 to 15 meters in height. The leaves are often leathery and arranged alternately along the stem. These leaves may have serrate margins, which means they have saw-like edges, or they may have entire margins.

Camellia reticulata - Houye Diechi - HLABG
Camellia reticulata - Houye Diechi - HLABG

The flowers are often large and conspicuous, typically measuring one centimeter in diameter. They are hermaphrodite, meaning they possess both male and female reproductive parts. A defining feature of many camellia flowers is a dense bouquet of bright yellow stamens. These stamens often provide a sharp color contrast against the petals.

Flower color and size are closely linked to how the plants are pollinated.

金花茶 Camellia petelotii 20221114215806 05
金花茶 Camellia petelotii 20221114215806 05

Most species produce flowers in shades of white, pink, or red. Truly yellow flowers are rare and are found only in South China and Vietnam. Research suggests that petal color indicates the intended pollinator. Species with red or yellow flowers are often pollinated by sunbirds. In contrast, species with white flowers tend to be smaller in diameter. These white-flowered species are typically pollinated by bees. This relationship ensures that the plants can reproduce effectively within their specific ecosystems.

After flowering, the plant produces fruit in the form of a capsule.

Camellia sinensis MHNT.BOT.2016.12.24
Camellia sinensis MHNT.BOT.2016.12.24

These capsules are woody and can have between one and five locules, which are internal compartments. The fruit is often described as globose or oblate in shape. Inside these capsules, the plant develops seeds that can be semiglobose, globose, or polygonal. These seeds are exalbuminous, meaning they lack a significant endosperm. The fruit is a loculicidal capsule, which describes how it splits open to release the seeds along a specific line.

Taxonomy, or the science of naming and classifying organisms, has evolved significantly for this genus. Carl Linnaeus first described the genus *Camellia* in 1753. He named it to honor the Jesuit botanist Georg Joseph Kamel. Kamel worked in the Philippines and described one of the species.

Camellia japonica MHNT.BOT.2010.13.3
Camellia japonica MHNT.BOT.2010.13.3

Modern science has used phylogenetic studies to refine these classifications. In 2022, a study of 161 species led to the genus being divided into seven distinct sections. These sections include *Camellia sect. Camellia*, *Chrysantha*, *Longipedicellata*, *Longissima*, *Paracamellia*, *Thea*, and *Tuberculata*. Some sections, such as *Oleifera* and *Paracamellia*, have been merged based on these genetic findings.

Camellias hold immense economic and cultural significance. *Camellia sinensis* is perhaps the most famous species. Its leaves are processed to create tea, which is consumed globally. This plant is of major economic importance in East Asia, Southeast Asia, and the Indian subcontinent.

Another important species is *Camellia oleifera*. This plant produces tea seed oil, which is used widely in both cooking and cosmetics. Ornamental varieties, such as *C. japonica* and *C. sasanqua*, are the foundation for hundreds of garden cultivars. This variety allows people to use camellias for many different purposes.

We can also learn about the history of these plants through the fossil record.

Camellia sinensis seedling3
Camellia sinensis seedling3

Fossil evidence shows that camellias have existed for a very long time. The earliest leaf fossils, such as *†C. abensis*, date back to the upper Eocene in Japan. Other fossils, like *†C. abchasica*, come from the lower Oligocene in Bulgaria. Even fossil wood has been found in Washington, United States, from the lower Oligocene. These ancient remains provide a window into how the genus has survived and spread across different continents and climates over millions of years.

662 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (11)
File:Camellia × intermedia fma. alba (Tuyama) Nagam. in Fl. Japan 2a- 398 (2006) 20240216 180127.jpg
Camellia × intermedia fma. alba (Tuyama)...
File:金花茶 Camellia petelotii 20221114215806 05.jpg
金花茶 Camellia petelotii 20221114215806 05.jpg
File:Camellia reticulata - Houye Diechi - HLABG.png
Camellia reticulata - Houye Diechi - HLABG.png
File:Camellia sasanqua5.jpg
Camellia sasanqua5.jpg
File:Camellia japonica MHNT.BOT.2010.13.3.jpg
Camellia japonica MHNT.BOT.2010.13.3.jpg
File:Camellia rosiflora Hook. in Bot. Mag. 84- t. 5044 (1858) 20241123 222832.jpg
Camellia rosiflora Hook. in Bot. Mag. 84-...
File:Camellia sinensis MHNT.BOT.2016.12.24.jpg
Camellia sinensis MHNT.BOT.2016.12.24.jpg
File:Camellia amplexicaulis (Pit.) Cohen-Stuart in Meded. Proefstat. Thee 11- 67 (1916) 20241113 103316.jpg
Camellia amplexicaulis (Pit.)...
File:Camellia sinensis seedling3.jpg
Camellia sinensis seedling3.jpg
File:Camellia reticulata RHS.jpeg
Camellia reticulata RHS.jpeg
File:New Zealand Suffragette.jpg
New Zealand Suffragette.jpg
More to explore

✨ What else?

Related topics you might enjoy

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.