Ruellia biolleyi.jpg Ruellia jaliscana_illustration by A. Labadie.jpg Ruellia megachlamys2.jpg Ruellieae pollen_Daniel1998.jpg Ruellia jaliscana.jpg Dyschoriste repens.jpg Sanchezia parvibracteata.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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