Weed
prairie rosinweed
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.
Obovate
Brown
Striate with fine hairs
ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end not indented.
No pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
. Margin not always winged.
Not listed
Not included
Asteraceae
Silphium terebinthinaceum Jacq.
