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ophis: jointed rush
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ophis: maturing inflorescences, jointed rush
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ophis: red brown capsules with persistent beaks, jointed rush
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ophis: Capsules longer than six appressed tepals, jointed rush
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ophis: capsules, jointed rush
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ophis: .5 mm achenes, jointed rush
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ophis: hollow flattish leaf blades, jointed rush
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ophis: elongate rhizome, jointed rush