This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Onopordum acaulon Fruits. es Onopordum acaulon cardo blanco sentado Cipsela suelta con su vilano eleosoma basal placa apical poligonal nectario central Federal noxious weed disseminules of the Edition updated April California Department of Food and Agriculture and USDA APHIS Identification Technology Program Fort Collins