Weed
weakleaf bur ragweed
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.
ObovateObovate:
Inverted egg shaped with apical end the broadest.
Brown
Deep indentations on basalBasal:
The base of the fruit or seed opposite the apical end.
half
Hooked thorns on basalBasal:
The base of the fruit or seed opposite the apical end. half involucreInvolucre:
A number of bracts (often leaf-like) that subtend an inflorescence such as the head in sunflowers.
.
Seed type is best described as an 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. enclosed in an involucreInvolucre:
A number of bracts (often leaf-like) that subtend an inflorescence such as the head in sunflowers.. Smallest of the bursages.
State Noxious Weed: Hawaii
Not included
Asteraceae
Ambrosia confertiflora DC.
Franseria confertiflora (DC.) Rydb.
Franseria strigulosa Rydb.
Gaertneria tenuifolia Harv. & A. Gray
