HOP SEDGE, Carex
lupulina Muhl. Perennial, reproducing by seeds and rhizomes.
Root system shallow and fibrous. Stems smooth, 2 to 2-1/2
feet (60 to 75 cm) tall, 3-sided, filled with pith, with few nodes and
internodes, ending in a spike. The plant grows in dense mats. Leaves
3 ranked, without hairs but harsh, mostly basal with long blades and short
sheaths. The relatively few stem leaves have long, narrow, V-shaped blades,
pronounced midribs, closed sheaths, no auricles, and much reduced ligules.
Spikes 1 to 3 inches (2.5 to 7.5 cm) long, bearing male and female
flowers on the same plant, with male flowers uppermost on inflorescence.
Bloom in July and August. Seeds brown, 3-sided, 1/8 inch (3 mm)
thick and 1/2 inch (13 mm) long. Found in swamps, ditches, and other
poorly drained areas. Not an important weed.