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Strobilanthes dyerianus_reduced filament curtain.jpg Ruellia donnell-smithii.jpg R_ yurimaguensis2_photo by A. Schmidt-Lebuhn.jpg Ruellia caroliniensis.jpg Tetramerium sp.jpg Ruellia chartacea_bract.jpg Strobilanthes dyerianus2.jpg

Acanth Fact of the Day

A major clade within Acanthaceae is the cystolith clade. Cystoliths are anatomical structures found in leaves and are thought to be composed of calcium carbonate or calcium oxalate. Their function is unknown.
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