the root (no rank)
Eukaryota (domain)
Viridiplantae (kingdom)
Embryophyta (phylum)
Magnoliophyta (subphylum)
Liliopsida (class)
Cyperales (order)
Poaceae (family)
Pooideae (subfamily)
Avena (genus)
Avena sterilis (species)
Avena sterilis ludoviciana (subspecies)
[hide inferior taxa]