Virescence
Virescence is the abnormal development of green pigmentation in plant parts that are not normally green, like shoots or flowers. Virescence is closely associated with phyllody and witch's broom. They are often symptoms of the same disease affecting the plants, typically those caused by phytoplasmas. The term chloranthy is also sometimes used for floral virescence, though it is more commonly used for phyllody.
The term was coined around 1825, from Latin virescere, "to become green". In the English language the term may also refer to greenness.
