Porella squamulifera (Taylor) Trevis.  

Family: Porellaceae

[Bellincinia columbica (Taylor) Kuntze,  more, Bellincinia squamulifera (Taylor) Kuntze, Madotheca columbica Taylor, Madotheca latetrigona Steph., Madotheca renifolia Steph., Madotheca rotundifolia (Schiffn.) Steph., Madotheca rotundifolia f. latilobula Herzog, Madotheca rotundifolia f. rotundifolia autonym, Madotheca rufescens Steph., Madotheca squamulifera Taylor, Madotheca squamuligera Taylor, Porella columbica (Taylor) Trevis., Porella renifolia (Steph.) Swails, Porella rotundifolia Schiffn.]