Weed
common sneezeweed
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.
Conical
Light brown ribs and a dark brown background
Ribs with short appressedAppressed:
Pressed close or lying flat against something.
hairs
PappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
is made of triangularly papery scales.
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 somewhat rounded at the basalBasal:
The base of the fruit or seed opposite the apical end.
end.
Not listed
Not included
Asteraceae
Helenium autumnale L.
