Phytochemical evaluation of an n-hexane leaf extract yielded alkaloids, terpenoids, flavonoids, steroids, cardioglycosides, oils and fats, tannins and carbohydrates. The major compounds were ß-pinene and α-pinene, trans-caryophyllene, camphene, and 7-epi- α-selinene. purpurata to be composed mainly by mono- and sesquiterpenes. Study of essential oil of inflorescences showed A. purpurata leaves and flowers yield a predominance of α-pinene, β-pinene and 1,8 cineol. The two latter metabolites were identified as kumatakenin, stiosteryl-3-O-6-palmitoyl-ß-D-glucoside and ß-sitosteryl galactoside. Subextracts of leaves yielded a mixture of C28-C32 fatty alcohols, a 3-methoxyflavone and two steroid glycosides. Widely cultivated and naturalized in the tropics. Recently introduced to the Philippines. Pseudostems formed by leaf sheaths emerge from underground rhizomes. Flowers are small, white, 1 or 2, arising from the red bracts Inflorescence is a terminal spike, often pendulous, showy, up to 90Ĭentimeters long. Large clumps, growing to 3-4 meters tall. Luyang-pula is a rhizomatous perennial, leafy herb forming
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