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At maturity, Brown Fox Sedge (Carex vulpinoidea) forms a large and attractive tuft of narrow leaves. It is somewhat similar in appearance to some others sedges, including Yellow Fox Sedge (Carex brachyglossa), Bur-Reed Sedge (Carex sparganioides), and Cypress Knee Sedge (Carex decomposita). Yellow Fox Sedge produces a less bristly inflorescence that becomes golden-yellow at maturity; unlike Brown Fox Sedge, its leaves do not overtop the culms. Bur-Reed Sedge has wider leaves and there are more gaps between its spikelets along the inflorescence. Cypress Knee Sedge also has wider leaves and the perigynia of its spikelets are obovoid-flattened in shape, rather than ovoid-flattened. Other similar sedges have shorter inflorescences that are less bristly in appearance, or their 3-angled culms are conspicuously winged, or their leaf blades are wider than those of Brown Fox Sedge.

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© John Hilty

Source: Illinois Wildflowers

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