Hibiscus moscheutos subsp. palustris White March 1, 2024 By Category: Seminum | Sub-Category: Wildflowers Scientific Name (Genus/Species): Hibiscus moscheutos subsp. palustris White Family: (Malvaceae) (P) to 7′. Swamp Rose Mallow. Eastern US. A lovely white version of the above with a dark pink centre. Late summer bloomer. 1 & 2B, then 3 & T2