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Carex Group 2
See list of 16 species in this group-
1a. Stigmas 2; achenes lenticular to biconvex
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2a. Basal sheaths anthocyanic; carpellate scales obtuse at apex; plants of alpine ridges and plateaus
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2b. Basal sheaths not tinged with anthocyanic pigments; carpellate scales acute to acuminate at apex; plants of organic soil wetlands
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3a. Stems 5–20 cm tall, produced singly or few together from long, slender rhizomes; leaves 0.3–0.7 mm wide (in part)
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3b. Stems 12–70 cm tall, cespitose; widest leaves 0.8–1.5 mm wide (in part)
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1b. Stigmas 3; achenes trigonous
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4a. Spike unisexual; perigynia pubescent (in part)
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4b. Spike bisexual; perigynia glabrous
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5a. Spike gynaecandrous; perigynium with a bidentate beak, the body obconic to obovoid (in part)
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5b. Spike androgynous; perigynium beaked or not, the orifice entire to truncate (i.e., without teeth), the body narrow-subulate to globose
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6a. Perigynia (5–) 5.9–7.8 mm long, narrow-subulate in outline, spreading to reflexed; style persistent on achene
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6b. Perigynia 2.5–5.4 mm long, narrow-ellipsoid to ovoid, ascending to appressed; style deciduous from achene
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7a. Lower carpellate scales foliaceous, surpassing and concealing the perigynium; perigynium with a conspicuous beak; leaves 1.3–5.4 mm wide (in part)
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7b. Lower carpellate scales not foliaceous, shorter than to slightly exceeding the perigynium; perigynium beakless; leaves 0.4–1.3 mm wide
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Each photo represents one species in this subgroup.