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

198b. Carex scopulorum Holm var. bracteosa (L. H. Bailey) F. J. Hermann, Leafl. W. Bot. 9: 16. 1959.

Carex vulgaris L. H. Bailey var. bracteosa L. H. Bailey, Proc. Amer. Acad. Arts 22: 1887; C. brachypoda Holm; C. campylocarpa Holm; C. campylocarpa subsp. affinis Maguire & A. H. Holmgren; C. gymnoclada Holm

Culms 11–65 cm, scabrous on angles. Leaves: proximal sheaths red-brown, fronts with pale brown spots, veinless, with blades, glabrous, backs scabrous; blades 3–6 mm wide. Perigynia ellipsoid to obovoid, apex obtuse or rounded. 2n = 72–80.

Fruiting Aug–Sep. Wet subalpine and alpine meadows; 1200–3000 m; Alta., B.C., Yukon; Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.

A common sedge of the central Rocky Mountains, Carex scopulorum var. bracteosa is distinguished from var. scopulorum by the scabrous stems and sheaths and by the narrower, more ellipsoid perigynia. It is usually distinguishable from var. prionophylla by the absence of bladeless, ladder-fibrillose sheaths; the two taxa may be difficult to identify in areas where both occur.


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