Weed
muster John Henry, wild marigold, marigold, stinkweed
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.
Linear
Black with a yellow base
Covered with appressedAppressed:
Pressed close or lying flat against something.
short hairs
Remnants of scaly pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
, large collar, and lateral scar present.
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 very long and thin. Remnant of the pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. scales usually persists. The scar is pointed and located on a lateral side of the base. Some angular longitudinal ridges are present.
State Noxious Weed: California, Hawaii
Not included
For more information, see ISMA fact sheet.
Asteraceae
Tagetes minuta L.
Tagetes bonariensis Pers.
Tagetes glandulifera Schrank
Tagetes glandulosa Schrank ex Link
Tagetes porophylla Vell.
