Polygonum aviculare subsp. calcatum (Lindman) Thellung

Polygonum aviculare subsp. calcatum (Lindman) Thellung is a synonym sensu FNA Ed. Comm., 2005 of:

Polygonum aviculare subsp. depressum (Meisner) Arcangeli, an accepted subspecies name sensu FNA Ed. Comm., 2005.