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)
[hide inferior taxa]
Centaurea americana (species)
Centaurea calcitrapa (species)