Weed
flatsedge
AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.
SpatulateSpatulate:
Having a narrow base and rounded apex. Pear-shaped.
Light brown
Smooth with longitudinal lines
PerigyniumPerigynium:
The saclike bract that subtends the pistillate flower of sedges (Carex), which in fruit becomes a flask-shaped envelope surrounding the fruit (achene).
with large flat scales on the margin
The covering (perigyniumPerigynium:
The saclike bract that subtends the pistillate flower of sedges (Carex), which in fruit becomes a flask-shaped envelope surrounding the fruit (achene).) for the acheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat. is highly ornamented along its margin.
State Noxious Weed: Arizona, Rhode Island, Texas
Not included
For more information, see ISMA fact sheet, Cyperus spp.
Cyperaceae
Cyperus L.
