Flower, Weed
sweetscented marigold
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.
Oblanceolate
Black
Rough
Surface is mostly made of black longitudinal ribs.
There are short united scales with a few longer bristles for a pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
.
Not listed
Not included
Asteraceae
Tagetes lucida Cav.
