Weed
clustered field 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.
Circular (top view), ovalOval:
Broadly elliptic.
(cross section)
Brown
Smooth
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 small with a short style.
PerigyniumPerigynium:
The saclike bract that subtends the pistillate flower of sedges (Carex), which in fruit becomes a flask-shaped envelope surrounding the fruit (achene). fits tightly over 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. and has faint ribs.
Not listed
Not included
Cyperaceae
Carex praegracilis W. Boott
Carex camporum Mack.
