Weed
New York ironweed
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
Brown
Moderately rough between sharp longitudinal ribs
Several sharp longitudinal ribs dominate the 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. surface.
PappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
crown has two types of pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. elements: the outer ring is made of short scales and the inner elements are long filamentous hairs.
Not listed
Not included
Asteraceae
Vernonia noveboracensis (L.) Michx.
Vernonia noveboracensis (L.) Michx. var. tomentosa (Elliott) Britton
