Flower, Weed
spiny plumeless thistle
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.
Light brown with dark brown longitudinal lines
Small transverseTransverse:
Set crosswise, crossing or at right angles.
waves
Large stylarStylar:
The end of the fruit or seed that contains the style or the apical end.
lobe surrounded by an apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
rim.
AchenesAchene:
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 oblong to obovateObovate:
Inverted egg shaped with apical end the broadest., compressed, slightly gibbous (more curved on one side than on the other); numerous narrow, brown, longitudinal lines; small transverseTransverse:
Set crosswise, crossing or at right angles.
waves on the surface. ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar. rim lighter yellow than the rest of the 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.. Large stylarStylar:
The end of the fruit or seed that contains the style or the apical end. lobe. Attachment scar basally positioned.
State Noxious Weed: Arizona, California, Colorado, Delaware, Hawaii, Maryland, Michigan, Minnesota, Nebraska, South Dakota, Tennessee, Utah, Virginia, West Virginia, Wyoming
Not included
For more information, see ISMA fact sheet.
Asteraceae
Carduus acanthoides L.
