Roger Powell / Common gum cistus flowers {Cistus ladanifer} Extremadura, Spain

Jose B. Ruiz / Sageleaf rockrose {Cistus salvifolius} Caminomorisco, Las Hurdes, Caceres, Extremadura, Spain

David Welling / Rock Rose flower, California (Cistus incanus) USA

David Perpinan / Crab spider (Synema globosum) hiding beneath Grey-leaved cistus (Cistus albidus) petal, preparing to ambush prey, Barcelona, Spain. July.

David Perpinan / Crab spider (Thomisus onustus) on the underside of Grey-leaved cistus (Cistus albidus) petal. The Spider is moving a captured Syrphid. Barcelona, Spain. July.

David Perpinan / Crab spider (Thomisus onustus) on the underside of a Grey-leaved cistus (Cistus albidus) petal, ready to ambush its prey. The Spider is moving its fangs. Barcelona, Spain. July.

David Perpinan / Crab spiders (Thomisus onustus) (Synema globosum) on a Grey-leaved cistus (Cistus albidus) flower with Beetles. A Beetle bothers the Spider (Thomisus onustus) and then the Spider flicks it away with i...

David Perpinan / Crab spider (Thomisus onustus) on a Grey-leaved cistus (Cistus albidus) petal, ready to ambush its prey. A Beetle is feeding on the flower, infront of the Spider. Barcelona, Spain. July.

David Perpinan / Crab spider (Thomisus onustus) and Beetles on a Grey-leaved Cistus (Cistus albidus) flower. Another Crab spider (Synema globosum) appears from the underside of a petal and attempts to catch a Beetle....

David Perpinan / Crab spider (Synema globosum) on underside of a Grey-leaved Cistus (Cistus albidus) petal. It attempts to catch a Bee but fails. Barcelona, Spain. July.

David Perpinan / Crab spider (Thomisus onustus) catching a Syrphid on a Grey-leaved cistus (Cistus albidus) flower, Barcelona, Spain. July.

Paul Harcourt Davies / Apennine rockrose (Helianthemum appeninum) in flower, Sibillini, Umbria, Italy. June.

Paul Harcourt Davies / Apennine rockrose (Helianthemum appeninum) in flower, Gargano, Puglia, Italy. April.

Paul Harcourt Davies / Montpellier cistus (Cistus monspeliensis) in flower, nr Peschici, Gargano, Italy. April.

Paul Harcourt Davies / Cretan cistus (Cistus creticus) in flower along the coast with Torre di Porticello, a 16th century watchtower, in the distance, nr Vieste, Gargano, Puglia, Italy. April.

Linda Pitkin / Montpelier rock rose (Cistus monspeliensis) in flower, Via Verde, Manacor, Mallorca, Balearic Islands. April.

Linda Pitkin / Montpelier rock rose (Cistus monspeliensis) flowers, close up, along the 'Via verde' eco path, Manacor to Arta, Mallorca, Balearic Islands. April.

Linda Pitkin / Montpelier rock rose (Cistus monspeliensis) in flower along the 'Via verde' eco path, Manacor to Arta, Mallorca, Balearic Islands. April.

Linda Pitkin / Common rock-rose (Helianthemum nummularium) in flower. Riddlesdown Quarry, Surrey, UK. June.

Linda Pitkin / Common rock-rose (Helianthemum nummularium) in flower. Riddlesdown Quarry, Surrey, UK. June.

Paul Harcourt Davies / Common rockrose (Helianthemum nummularium) in flower on rocky ground at altitude, Sibillini, Umbria, Italy. April.

Paul Harcourt Davies / Apennine rockrose (Helianthemum appeninum) flowering in mountain pasture, Sibillini, Umbria, Italy. May.

Paul Harcourt Davies / Hoary rockrose (Helianthemum oelandicum) in flower forming loose cushions in limestone mountains, Abruzzo, Italy. June.

Paul Harcourt Davies / Hoary rockrose (Helianthemum oelandicum) in flower, Sibillini, Umbria, Italy. May.

Paul Harcourt Davies / White rockrose (Helianthemum appeninum) in flower, Sibillini, Umbria, Italy. May.

Edwin Giesbers / Succulent (Aeonium pseudourbicum) and Narrow leaved cistus (Cistus monspeliensis) Tenerife, Canary Islands, Europe.

Edwin Giesbers / Montpellier rockrose (Cistus monspeliensis) and Tabaiba majorera / roja(Euphorbia atropurpurea) Tenerife, Canary Islands

Nick Upton / Common rock-rose (Helianthemum nummularium) and Wild thyme (Thymus polytrichus) clumps on limestone cliff top. Rhossili, The Gower, Glamorgan, Wales, UK. July 2020.

Nick Upton / Common rock-rose (Helianthemum nummularium) and Wild thyme (Thymus polytrichus) on limestone cliff top. Rhossili, The Gower, Glamorgan, Wales, UK. July 2020.

Nick Upton / Common rock-rose (Helianthemum nummularium) and Wild thyme (Thymus polytrichus) on limestone cliff top. Rhossili, The Gower, Glamorgan, Wales, UK. July 2020.

Nick Upton / Common rock-rose (Helianthemum nummularium) beside limestone rock, Northeast Somerset, England, UK. May.

David Perpinan / Hoverfly (Syrphidae sp.) nectaring from a white-leaved rock rose (Cistus albidus), Barcelona, Spain, April.

David Perpinan / Bumblebee (Bombus sp.) nectaring on White -leaved rock rose (Cistus albidus) flower, Barcelona, Spain, April.

David Perpinan / Bumblebee (Bombus sp.) nectaring on White-leaved rock rose (Cistus albidus) flower, Barcelona, Spain, April.

Niall Benvie / Selection of wildflowers against white background, including Thistle (Cirsium), Common rockrose (Helianthemum chamaecistus), Meadow clary (Salvia pratensis) Creeping hairbell (Campanula rapunculoides)...

Nick Upton / Montpellier rockrose (Cistus monspeliensis) flowering on limestone cliff tops, Majorca south coast, May.

Paul Harcourt Davies / Apennine rockrose (Helianthemum appeninum) occurs in drifts in stony mountain pastures and at roadsides, Sibillini, near Norcia, Umbria, Italy. May.

Linda Pitkin / Common rock-rose (Helianthemum nummularium) Surrey, England, July.

Steve Nicholls / White rock-rose (Helianthemum apenninum) a rare plant of a few coastal locations in Devon and Somerset, growing here on Brean Down near Weston, Avon, England, UK, June.

Steve Nicholls / White rock-rose (Helianthemum apenninum) a rare plant of a few coastal locations in Devon and Somerset, growing here on Brean Down near Weston, Avon, England, UK, June.

Steve Nicholls / Common rockrose (Helianthemum nummularia) growing at Bishop Middleham quarry, Durham, England, UK, June.

Philippe Clement / Common rock-rose (Helianthemum nummularium subsp. nummularium) white form in flower, native to most of Europe. May