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Ruellia laslobasensis.jpg Blechum lineage of Ruellia_pollen.jpg Ruellia galeottii.jpg R_ yurimaguensis2_photo by A. Schmidt-Lebuhn.jpg Ruellia chartacea.jpg Ruellia macrophylla var. lutea.jpg Ruellia elegans_enantiostyly.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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