Carex willdenowii Schkuhr ex Willdenow. Section: [26kkk] Section 44 Phyllostachyae. Common name: Willdenow’s Sedge. Phenology: May-Jun. Habitat: Calcareous mesic forests, but also in more acidic dry-mesic upland oak forests. Distribution: MA, VT, NY, s. ON, and c. IN, south to nc. SC, n. AL, and s. IL; disjunct in c. AR.

Origin/Endemic status: Native

Taxonomy Comments: Naczi (1999b) reported chromosome numbers of n = 31, 39.

Synonymy ⓘ: = Ar, Can, FNA23, Il, K4, NE, NS, NY, POWO, Tn, Va; < Carex willdenovii — C, G, Mo1, Pa, S, Catling, Reznicek, & Crins (1993), Mackenzie (1931-1935), orthographic variant; < Carex willdenowii Schkuhr ex Willd. — F, RAB, W. Basionym: Carex willdenowii Schkuhr ex Willd. 1805

Links to other floras: = Carex willdenowii - FNA23

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACU
• Eastern Mountains and Piedmont: UPL
• Midwest: FACU
• Northcentral & Northeast: UPL

Heliophily ⓘ: 3