Carex rotundata, Wahlenb.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 304

59. C. rotundata Wahlenb. , Kungl. Svenska Vet.-Akad. Handl, nov. ser., 24: 153 (1803).

Like 58 but stems always erect, stouter and more rigid; basal sheaths often pale brown; leaves usually shorter than stems, 1-2 mm wide, greyish-green, more rigid, canaliculate with inrolled margins; female spikes subsessile; lowest bract usually patent or deflexed; utricles 2-5-4 mm, strongly inflated and patent; stigmas 3. Tundra, flushes and wet peaty ground; somewhat calcifuge. N. & W. Fennoscandia, arctic and subarctic Russia. Fe No Rs (N) Su.

Partly fertile hybrids with 55 and 58 occur frequently and are often confused with both these species.