Weed
Scotch cotton thistle, cotton thistle, heraldic thistle, Scotch 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 a glossy gray overcast, black longitudinal lines
Large and wavy transverseTransverse:
Set crosswise, crossing or at right angles.
wrinkles
Pointed base, rounded apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
with large stylarStylar:
The end of the fruit or seed that contains the style or the apical end.
mound
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. broadly obovateObovate:
Inverted egg shaped with apical end the broadest., compressed and slightly four-sided. Strong transverseTransverse:
Set crosswise, crossing or at right angles.
wrinkles, grayish brown with various amounts of black longitudinal streaking. ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar. with slightly depressed ring around style base. Scar basalBasal:
The base of the fruit or seed opposite the apical end.
or nearly so.
State Noxious Weed: Arizona, California, Colorado, Idaho, Nebraska, Nevada, Oklahoma, Utah, Wyoming
Included
Asteraceae
Onopordum acanthium L.
