Carex vulpinoidea

Species category

Weed

Common name

fox sedge

Diagnostic characters

Planting unit

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.

Shape

Circular (top view), ovalOval:
Broadly elliptic.
(cross-section)

Size

  • Length: 1–2 mm
  • Width: 1–1.5 mm
  • Thickness: 0.3–0.4 mm

Color

Black

Texture

GlandularGlandular:
The surface appearing to be covered with minute glands or spheres.

Other structures

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 obovateObovate:
Inverted egg shaped with apical end the broadest.
with longitudinal ribs.

Identification notes

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.
loosely covered by the perigyniumPerigynium:
The saclike bract that subtends the pistillate flower of sedges (Carex), which in fruit becomes a flask-shaped envelope surrounding the fruit (achene).
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Cyperaceae

Valid name

Carex vulpinoidea Michx.

 Carex vulpinoidea.  Achenes with an obovate perigynium with longitudinal ribs. 
Carex vulpinoidea. Achenes with an obovate perigynium with longitudinal ribs.