Is rhaphidophora tetrasperma toxic to cats?
Rhaphidophora tetrasperma is toxic to cats, the toxic principle is insoluble calcium oxalate crystals. These needle-sharp crystals are formed in the vacuoles of specialized cells called crystal idioblasts. Calcium oxalate crystals are found within the tissue of the plant where they form in clusters known as raphides as a defence mechanism against herbivory.
If the plant is chewed, calcium oxalate crystals penetrate oropharynx causing intense burning and pain.