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FNA | Family List | FNA Vol. 23 | Cyperaceae | Carex

205. Carex norvegica Retzius, Fl. Scand. Prodr. 179. 1779.

Carex de Norvège

Carex alpina Liljeblad; C. norvegica subsp. conicorostrata Kalela; C. norvegica subsp. inserrulata Kalela; C. norvegica var. inserrulata (Kalela) Raymond; C. vahlii Schkuhr

Plants densely cespitose. Culms 5–35 cm, distally scabrous. Leaves 2–3 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes globose or oblong, 4–10 × 3–6 mm; lateral 1–2(–3) spikes pistillate, distant, distinct, erect, short-pedunculate; terminal and distal lateral spikes overlapping, sessile, forming dense terminal cluster; terminal spike gynecandrous. Pistillate scales dark brown or black, margins hyaline, ovate, shorter than or equaling and as broad as perigynia; midvein same color as body, inconspicuous. Perigynia ascending, green becoming dark brown or purple-black, veinless, elliptic or obovate, 2–2.5 × 1.25–1.5 mm, often serrulate distally, apex abruptly beaked, papillose; beak 0.2–0.3 mm, shallowly bidentate, smooth or serrulate. Achenes nearly filling body of perigynia. 2n = 56.

Fruiting Jul–Aug. Mossy heath, tundra; 0–1000 m; Greenland; Man., Nfld. and Labr., Nunavut, Ont., Que.; Eurasia.

Carex norvegica is an amphi-Atlantic species. Carex norvegica subsp. inserrulata is synonymous with subsp. norvegica in this treatment; however, as some differences can be seen between subsp. inserrulata in Greenland and subsp. norvegica in northern Europe, further study is warranted.


 

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