Ruellia palustris_retinacula.jpg Ruellia noctiflora.jpg Ruellia neesiana_resupinate flowers2.jpg Eremomastax speciosa_pollen.jpg Anoura caudata_nectar bat with pollen on head.jpg Ruellia ochroleuca_trigonid bee.jpg Ruellia humboldtiana_fruit.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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