Weed
nodding 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 with a brown apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
collar
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, compressed, slightly gibbous (more curved on one side than on the other); glossy, honey-brown with numerous dark brown longitudinal lines; surface appears pebbled. Apical rim honey-brown, horizontal or slightly oblique. Style base cylindrical to cone-shaped, lobed at base.
State Noxious Weed: Arizona, California, Colorado, Delaware, Hawaii, Idaho, Kansas, Maryland, Michigan, Minnesota, Missouri, Nebraska, Nevada, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Dakota, Tennessee, Utah, Virginia, Wyoming
Included
For more information, see ISMA fact sheet.
Asteraceae
Carduus nutans L.
Carduus macrocephalus Desf.
Carduus macrolepis Peterm.
Carduus nutans L. ssp. leiophyllus (Petrovic) Stojanov & Stef.
Carduus nutans L. var. leiophyllus (Petrovic) Arènes
Carduus nutans L. ssp. macrocephalus (Desf.) Nyman
Carduus nutans L. ssp. macrolepis (Peterm.) Kazmi
Carduus nutans L. var. macrocephalus (Desf.) B. Boivin
Carduus nutans L. ssp. nutans
Carduus nutans L. var. vestitus (H.M. Hallier) B. Boivin
