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Fertile culms of Pennsylvania sedge produce an apical inflorescence with a single terminal staminate spikelet 1-2.5 cm long above 1-3 smaller pistillate spikelets and their bracts, all purplish-brown at blooming. Staminate spikelets produce prominent creamy-yellow anthers; pistillate spikelets consist of 4-12 perigynia about 3 mm long and 1.5 mm across, each with 3 white, thread-like styles and a basal, scale-like bract shorter than the spikelet. The lowest pistillate spike bears a basal leaf-like bract usually longer than the spikelet. Florets are wind pollinated.

Carex

Carex pensylvanica

Pennsylvania sedge [Blooms: Apr]