Jack Dykinga / Hairy bird's foot morning glory (Ipomoea leptotoma) flower over Prickly pair (Opuntia sp) Catalina State Park, near Tucson, Arizona, USA, August.

Albert Lleal / Common Morning Glory (Ipomoea purpurea) SEM close-up view of pollen at 210x magnification

Patricio Robles Gil / Cardon (Pachycereus pringlei) cactus and flowering Common Morning Glory (Ipomoea purpurea) vines in the Miquihuana Desert, northeast Mexico

Nigel Cattlin / Beach morning glory (Ipomoea pes-caprae) flowers amongst creeping plants. Thailand.

Nigel Cattlin / Water spinach (Ipomoea aquatica), tender shoots used for cooking in South East Asia. Thailand.

Bernard Castelein / Hedge bindweed (Calystegia sepium), Peerdsbos, Brasschaat, Belgium. July

Bernard Castelein / Hedge bindweed (Calystegia sepium), Peerdsbos, Brasschaat, Belgium. July

Edwin Giesbers / Blue morning flower (Ipomoea indica) flowers and carpet of leaves. Cyprus. April.

Robert Thompson / Fallopia convolvulus (Convolvulus arvensis) Vingrau, French Pyrenees, France. May

Robert Thompson / Cantabrican morning glory (Convolvulus cantabrica), Catllar, Pyrenees Orientales, south west France. May.

Rod Williams / Hedge bindweed (Calystegia sepium) Brockley Cemetery, Lewisham, London, England, UK. June.

Ernie Janes / Dwarf morning glory (Convolvus tricolour) portrait, Norfolk, England, UK, July.