Arched Sedge (Carex repanda)
The Arched sedge was described in 1894, it is, or maybe, was apparently restricted to the Khasi Hills, a low mountain formation on the Shillong Plateau in Meghalaya, India. [1]
the species appears to be extinct now.
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[1] Joseph Dalton Hooker: The flora of British India. London: L. Reeve 1875-1897
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edited: 21.09.2020