Plant journal
Justicia
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Short Description
Justicia is a genus of flowering plants in the family Acanthaceae. It is the largest genus within the family, with over 900 accepted species. They are native to tropical to warm temperate regions of the Americas, India, and Africa. The genus serves as host to many butterfly species, such as Anartia fatima. Common names include water-willow and shrimp plant, the latter from the inflorescences, which resemble a shrimp in some species. The generic name honours Scottish horticulturist James Justice (1698–1763). They are closely related to Pachystachys.
Description
They are evergreen, perennial plants and shrubs with leaves that are often strongly veined, but they are primarily cultivated for their showy, tubular flowers in shades of white, cream, yellow, orange, violet, or pink. Excepting J. americana L., they are not hardy below 7 °C (45 °F), so must be grown under glass in frost-prone areas.


