Tetramerium sp.jpg Heteradelphia paulojaegeria.jpg Ruellia norvegigratiosa_leaf cystoliths.jpg Ruellia tubiflora2.jpg Sanchezia parvibracteata.jpg Trichanthera corymbosa_living fence.jpg Ruellia elegans x R. matudae_artificial hybrids.jpg.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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