Cyperus haspan L. - Haspan Flatsedge
Family - Cyperaceae
Stem in cross section.
Flowering - July - October.
Habitat - Marshes, bogs, lake and pond margins, ditches, low fields.
Origin - Native to North America.
Other information - This species can be found mainly in the southern half of Alabama. The plant can be identified by its sharply trigonous stems, compressed spikelets, and trigonous fruits.
Photographs taken off Lee Rd 27, Auburn, AL., 9-9-05.