Flower, Weed
Maximilian sunflower
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 and brown mottled
Rough
ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
margin rounds inward to a small 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
Many longitudinal lines on 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.. BasalBasal:
The base of the fruit or seed opposite the apical end.
achene attachment is somewhat lateral, not centered.
Not listed
Not included
Asteraceae
Helianthus maximiliani Schrad.
Helianthus dalyi Britton
