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Costus speciosus (C.speciosus) Koen.ex Retz. is a perennial herb with a tuberous horizontal rhizome and spirally arranged simple leaves with bisexual flowers. 5It exhibits multiple cytotypes, occurs worldwide, 6 and grows wild in shady places of mixed deciduous forests in India. 7Rhizomes
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Lodh et al. (2024) studied this question.
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