Synonyms
Pycnanthemum aristatum Michx.
Brachystemum linifolium Willd.
Koellia capitata Moench
Pycnanthemum virginicum (L.) Pers.
Pycnanthemum linifolium (Willd.) Pursh
Koellia hugeri Small
Origanum flexuosum Walter
Koellia aristata Kuntze
Koellia flexuosa (Walter) MacMill.