Common buttonbush
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Gentianales
- family: Rubiaceae
- genus: Cephalanthus
- species: Cephalanthus occidentalis
Fort Erie
Gravenhurst
Ontario
CanadaPinar del Río
Pinar del Río
CubaSayaxché
Petén
GuatemalaBergshamra
Djursholm
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Cheverly
Chevy Chase Village
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Cottage City
Edmonston
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Forest Heights
Four Corners
Glassmanor
Goddard
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Washington, D.C.
United States