Carex swanii Swan’s sedge Cyperaceae CASW; Bx, pb, sf, vc; Q, cu, f; cl, d, R, ev, fw, gb, go, h, lt, sc, sv, t;

Carex swanii plant. MBGargiullo, Central NJ. 5/27/2015

Carex swanii plant. MBGargiullo, Central NJ. 5/27/2015

Carex swanii is a perennial sedge, tufted, 50-100 cm, slender, often reddish at base. 

Leaves about as long as flowering stems or longer, sheaths and leaves finely hairy, often appearing slightly silvery (Gargiullo pers. obs.). 

Carex swanii inflorescence. www.John

Carex swanii inflorescence. www.John (Accessed 12/2014).

Flower spikes 2-4, 1-2 cm long, narrowly cylindrical, densely flowered, pale grayish-green, perigynia finely hairy, beakless, terminal spike with male flowers at base, female flowers (perigynia) above; achenes 3-sided; inflorescence bracts leaf-like but narrow, longer than spikes; blooms June-July. 

Wetland status: FACU. 

Frequency in NYC: Occasional. 

Origin: Native. 

Habitat: Upland forest understory, disturbed woods, also in rarely mowed, shady lawns, shade tolerant. 

Carex swanii

Carex swanii.M. B. Gargiullo (2009).

Notes: Fed upon by the larvae of Satyrodes spp. butterfliespillbugs (Sphenophorus spp.) and seed bugs. Seeds eaten by numerous birds and some mammals (Hilty 2006.)