Weed
northern singlespike sedge
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.
Top view–obovate
Cross-section–triangular
Brown
Smooth with very fine reticulations.
PerigyniumPerigynium:
The saclike bract that subtends the pistillate flower of sedges (Carex), which in fruit becomes a flask-shaped envelope surrounding the fruit (achene).
is ellipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.
and covered with coarse and appressedAppressed:
Pressed close or lying flat against something.
hairs.
Corners of 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. are sharp.
Not listed
Not included
Cyperaceae
Carex scirpoidea Michx.
