Camellia n. : An Asiatic genus of small shrubs, often with shining leaves and showy flowers. Camellia Japonica is much cultivated for ornament, and C. Sassanqua and C. oleifera are grown in China for the oil which is pressed from their seeds. The tea plant is now referred to this genus under the name of Camellia Thea.

Example:
Camellia...............................................?

Taxonomy
Camellia, flower, species, C. japonica, The Lady of the Camellias, the Japanese, Tsubaki, genus, unranked, williamsii, novel, Japanese Camellia, cultivars, free encyclopedia, Camellia sasanqua, tea plant, C. sinensis, hybrids.

Defination from the web:
camellia – is certainly the tea plant (C. sinensis) ... For example, in some parts of Japan, tea made from Christmas Camellia (C. sasanqua) leaves is popular. ...