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Ruellia Linnaeus. Wild-petunia.

Key to Ruellia

A genus of about ca. 375 species, of the tropics and temperate North America and Old Workd (Africa, etc.). Manzitto-Tripp & Daniel (2023) developed a subgeneric classification of Ruellia, followed here. Our species fall into three of the 15 sections: section Boreosilva (including most of our native species), section Ruellia (including some species from the western portion of our region), and section Blechum (with two non-native species).

Ref: Daniel (2013); Ezcurra & Daniel (2007); Fernald (1945); Long (1970); Manzitto-Tripp & Daniel (2023); Tripp et al. (2009); Turner (1991); Ward (2007c); Wasshausen (1998). Show full citations.

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image of plant© Bruce A. Sorrie | Ruellia ciliosa | Original Image ⭷
image of plant© Alan M. Cressler | Ruellia succulenta | Original Image ⭷
image of plant© Alan M. Cressler | Ruellia noctiflora | Original Image ⭷
image of plant© Gary P. Fleming | Ruellia purshiana | Original Image ⭷


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