the root (no rank)
Eukaryota (domain)
Viridiplantae (kingdom)
Embryophyta (phylum)
Magnoliophyta (subphylum)
eudicotyledons (no rank)
core eudicotyledons (no rank)
asterids (no rank)
campanulids (no rank)
Asterales (order)
Asteraceae (family)
Carduoideae (subfamily)
Cardueae (tribe)
Centaurea (genus)
Centaurea americana (species)
[hide inferior taxa]