Agricultural, Flower
common 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.
ObovateObovate:
Inverted egg shaped with apical end the broadest.
White to black with various degrees of striping
Smooth
BasalBasal:
The base of the fruit or seed opposite the apical end.
scar is rounded with apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
shoulders.
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 obovateObovate:
Inverted egg shaped with apical end the broadest. with no obvious apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar. rim. Color varies from white to black with various arrangements of white and black striping in between. Scar is basalBasal:
The base of the fruit or seed opposite the apical end..
State Noxious Weed: Iowa
Included
For more information, see ISMA fact sheet.
Asteraceae
Helianthus annuus L. (cultivated)
Helianthus annuus L. ssp. jaegeri (Heiser) Heiser
Helianthus annuus L. ssp. lenticularis (Douglas ex Lindl.) Cockerell
Helianthus annuus L. var. lenticularis (Douglas ex Lindl.) Steyerm.
Helianthus annuus L. var. macrocarpus (DC.) Cockerell
Helianthus annuus L. ssp. texanus Heiser
Helianthus annuus L. var. texanus (Heiser) Shinners
Helianthus aridus Rydb.
Helianthus lenticularis Douglas ex Lindl.
