Weed
Northwest Territory 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 some granulation
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.
with longitudinal ribs.
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 rounded and lighter brown.
Not listed
Not included
Cyperaceae
Carex utriculata Boott
Carex inflata Huds. var. utriculata (Boott) Druce
Carex rhynchophysa Fisch., C.A. Mey. & Avé-Lall.
Carex rostrata Stokes var. utriculata (Boott) L.H. Bailey
