Calamagrostis nardifoliaCalamagrostis nardifolia is a species of grass native to the southern Andes.DescriptionCalamagrostis nardifolia grows up to high, and bears a panicle of flowers, by. Each spikelet is long and contains a single fertile floret.EcologyCalamagrostis nardifolia is one of the fodder species preferred by vicuñas during the wet season.