Description: FloraWeb.de:
Helianthemum nummularium subsp. grandiflorum (Scop.) Schinz & Thell. Tela-Botanica.org:
Helianthemum grandiflorum subsp. grandiflorum, syn. Helianthemum vulgare Gaertn., Helianthemum nummularium subsp. ovatum (Viv.) Schinz & Thell., Helianthemum nummularium subsp. grandiflorum (Scop.) Schinz & Thell., Cistus helianthemum L. Original Caption Echtes Sonnenröschen, Cistus helianthemum. Date: 1796. Source: Figure from Deutschlands Flora in Abbildungen at
http://www.biolib.de. Author: Johann Georg Sturm (Painter:
Jacob Sturm).