Lectotypification of Carex courtallensis (Cyperaceae) and notes on its morphology and habitat

During the revision of Cyperaceae in Western Ghats, a specimen was collected from Chemunji hills, Thiruvananthapuram District, Kerala, identified as Carex courtallensis Nees ex Boott, a species recollected after a gap of 150 years, about 50 km away from the type locality. On examining the protologue of the species and later works, along with specimens housed at various herbaria, we identified the need for lectotypification of the species. The present paper provides detailed description, photographs and relevant notes on the species based on recent collections.