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Key to Carex, [26z] Section 17b Bicolores: section Bicolores

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1 Perigynia orange-colored when ripe, smooth to minutely papillose; lateral spikes lax; terminal spikes usually staminate, 0.9-2 mm wide; both perigynia and pistillate scales divergent when mature
1 Perigynia whitish-green colored when ripe, densely papillose; lateral spikes dense; terminal spikes usually gynecandrous, 0.2-0.7 mm wide; both perigynia and pistillate scales ascending when mature