Carex extensa Gooden., it is a rhizomatous geophyte. The stems up to 3-75 cm, rigid, smooth; basal sheaths blackish-brown, becoming slightly fibrous. Leaves about as long as stems, 1-3 mm wide, canaliculate or the margins in rolled, glaucous or greyish-green. Male spike 1(-3), 5-25 x 2-3 mm. Female spikes 2-4, 5-15(-20) x 4-6 mm, erect, overlapping or the lowest remote, with peduncles 0.3-1 cm; lowest bract greatly exceeding inflorescence, patent, with a sheath 3-10 mm. Female glumes reddish-brown. Utricles 2.5-4 mm, ascending, greyish- or greenish-brown, often reddish-spotted, not shining, prominently veined, gradually narrowed into a smooth, emarginate beak 0.5-0.75 mm.
Flowering in: Apr-Jul.
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