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'''Camellia sinensis''' is an evergreen plant that . It grows mainly in tropical and subtropical climates. Some varieties can also tolerate marine climates and are cultivated as far north as Cornwall in the It is native to United Kingdom, Perthshire in Scotland, Washington state in the United States, and Vancouver Island in Canada. In the Southern Hemisphere, tea is grown as far south as Hobart on the Australian island of Tasmania and Waikato in New Zealand. 

Fresh leaves from Assam contain 22.2% polyphenols, 17.2% protein, 4.3% caffeine, 27.0% crude fiber, 0.5% starch, 3.5% reducing sugars. Important constituents of leaf buds and very young leaves are: caffeine,with a much smaller amount of other xanthines (theophylline and theobromine); tannins (the main tanninin green tea is (−)-epigallocatechin); flavonoids, quercetin, kaempferol. <ref name="chemical composition"/>

{{Common names|kn=ಚಹ Chaha, ಚಹಾ Chahaa|ml=Teyila|sa=Syamaparni|ta=Tey|te=Teyaku|hi=Cay|en=Tea plant}}<ref name="Common names"/>

<ref name="chemical composition">[httpshttp://hortgbpihedenvis.purduenic.eduin/newcropPDFs/duke_energyGlossary_Medicinal_Plants_Springer.pdf Chemistry]</Camellia_sinensis.html ref> <ref name="chemistryLeaf">[http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:828548-1 Description]</ref>

<ref name="LeafCommon names">[http://powowww.scienceflowersofindia.kew.orgnet/catalog/taxonslides/urnTea.html#:lsid:ipni.org~:text=Camellia%20sinensis%20%2D%20Tea&text=Tea%20plant%20is%20an%20evergreen,with%207%20to%208%20petals Common names:828548-1 "description"]</ref>

<ref name="How to plant/cultivate">[https://www.pfaf.org/User/Plant.aspx?LatinName=Camellia+sinensis "cultivation Cultivation detail"]</ref>