Wool Grass is a perennial sedge consisting of a tuft of
low sterile shoots, from which arises one or more taller fertile
shoots. The fertile shoots are leafy hollow stems with terminal
flowers; they are about 3 to 5 feet tall. The stout stems of
fertile shoots are unbranched, bluntly 3-angled or circular in
cross-section, medium green, longitudinally veined, and smooth.
About 5 to 9 alternate leaves occur primarily along the lower
half of each stem.
The leaf blades are up to ½ inch across and 2 feet
long; are ascending to widely spreading. The blades are medium
green, smooth, and indented or furrowed. The leaf sheath is medium
green, veined, smooth, and closed. Sometimes small cross-veins
interconnect the longitudinal veins on the stems and sheaths.
The leaves of infertile shoots are similar to the leaves of fertile
shoots, except the former are somewhat smaller than the latter
and more evergreen.
The spikelets consist of a dense head of bisexual florets
in several overlapping series. Individual florets are about 1.5
to 2 mm long, lanceolate to ovate in shape, and brown-membranous.
Each floret has a tripartite style, 3 stamens, and an ovary.
At the base of the compound cyme, there are 3 or more large leafy