Crown Flower

The flowers are long lasting and are used in floral arrangements. The extract of flowers and leaves has shown hypoglycemic effect in research studies. They were favored by the Queen Liliuokalani, who considered them a symbol of royalty and wore them strung into leis. 

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The milky latex sap of Calotropis gigantea is a known cause of toxic keratoconjunctivitis and reversible vision loss. Crown flower keratitis is a rare condition and is usually the result of accidental ocular exposure to the sap.