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Strobilanthes heteromalla

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Strobilanthes heteromalla is a large shrub in the family Acanthaceae, native to the Coonoor Ghat region of India. It is one of the species of Strobilanthes with a very long blooming cycle. It was seen flowering in 1850 and not again until 1886 leaving open the possibility of a 36-year cycle, but as Gamble notes three 12-year or two eighteen year cycles might have somehow gone unnoticed.