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.

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas), Kojima, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) washing Sweet Potato (Ipomoea batatas) with sea water, Kojima, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) washing Sweet Potato (Ipomoea batatas) with sea water, Kojima, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) washing Sweet Potato (Ipomoea batatas) with sea water, Kojima, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas), Kojima, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas), Kojima, Miyazaki, Japan

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.

Sue Daly / Sea bindweed (Calystegia soldanella), Herm, British Channel Islands, June.

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Mike Read / Common dodder (Cuscuta epythimum) flowers, Broughton Down Hampshire Wildlife Trust Reserve, near Broughton, Hampshire England, UK, August.

Oriol Alamany / Morning Glory (Calystegia soldanella) in the dunes of es Cavallet beach, Las Salinas (Ses Salines) Natural Park, Ibiza biodiversity and culture UNESCO World Heritage Site, Spain.

John Waters / Great bindweed (Calystegia sepium) in flower, with dew drops, Somerset, UK, October.

John Waters / Great bindweed (Calystegia sepium), in flower, with dew drops, Somerset, UK, October.

Martin Gabriel / Sea bindweed / Beach morning glory (Calystegia soldanella), flowering, Salalah, Sultanate of Oman, February.

Martin Gabriel / Beach morning glory (Calystegia soldanella) , La Digue Island, Republic of Seychelles

Rod Williams / Hoverfly (Chrysotoxum bicinctum) feeding on field bindweed (Convolvulus) Brockley Cemetery, Lewisham, London UK August

Rod Williams / Hoverfly (Chrysotoxum bicinctum) feeding on field bindweed (Convolvulus) Brockley Cemetery, Lewisham, London, UK July

Tim Laman / Small dugout canoe with outriggers on beach with beach Morning glory flowers (Convolvulaceae) Bantanta Island, Papua, Indonesia

Bernard Castelein / Great bindweed (Calystegia sepium), Peerdsbos, Brasschaat, Belgium August

Bernard Castelein / Great bindweed (Calystegia sepium), Peerdsbos, Brasschaat, Belgium August

Rod Williams / Field bindweed (Convulvulus arvensis) Brockley Cemetery, Lewisham, London. July.

Rod Williams / Hoverfly (Helophilus pendulus) feeding on Field bindweed (Convolvulus arvensis) Brockley Cemetery, Lewisham, London UK August

Rod Williams / Hoverfly (Syrphus sp) feeding on Field bindweed (Convolvulus arvensis) Brockley Cemetery, Lewisham, London UK, August

Nick Upton / Blue morning glory (Ipomoea indica) flowers, an Asian species invasive in Portugal, Monchique mountains, Algarve, Portugal, August 2013.

Nick Upton / Blue morning glory (Ipomoea indica) flowers, an Asian species invasive in Portugal, Monchique mountains, Algarve, Portugal, August 2013.

Nick Upton / Blue morning glory (Ipomoea indica) flowers, an Asian species invasive in Portugal, Monchique mountains, Algarve, Portugal, August 2013.

Philippe Clement / Larger bindweed (Convolvulus sepium ) in flower, Belgium, August.

Philippe Clement / Larger bindweed (Convolvulus sepium ) in flower, Belgium, August.

Colin Varndell / Sea bindweed (Calystegia soldanella) flowers in bloom. Dorset, UK, June.

Colin Varndell / Sea bindweed (Calystegia soldanella) flowers, Dorset, UK, July.

Stephen Dalton / Close-up of Bindweed (Convolvulus sp) climbing round a plant stem, UK.

Rod Williams / Field Bindweed (Convolvulus arvensis) Ladywell Fields, Lewisham, South East London, England, UK, July

Kim Taylor / Dodder (Cuscuta sp) climbing up grass stem. France, July.

Paul Harcourt Davies / Field Bindweed (Convolvulus arvensis) in flower, Podere Montecucco, Orvieto, Umbria, Italy, July.

Doug Wechsler / Dodder (Cuscuta) parasitic plant on Goldenrod (Solidago) Bloomfield Farm, Morris Arboretum, Philadelphia, Pennsylvania, USA, August.

Nick Upton / Sea bindweed / Beach Morning Glory (Calystegia soldanella) flowering on coastal sand dunes among Marram grass (Ammophila arenaria) and Lesser hawkbit (Leontodon saxatilis), Studland, Dorset, UK, July...

Nick Upton / Sea bindweed / Beach Morning Glory (Calystegia soldanella) flowering on coastal sand dunes among Marram grass (Ammophila arenaria) and Lesser hawkbit (Leontodon saxatilis), Studland, Dorset, UK, July...

Staffan Widstrand / Beach Morning Glory (Ipomoea pes-caprae) Pulicat Lake, Tamil Nadu, India, January 2013.

Staffan Widstrand / Beach Morning Glory (Ipomoea pes-caprae) Pulicat Lake, Tamil Nadu, India, January 2013.

Cyril Ruoso / Japanese Macaque (Macaca fuscata) eating a sweet potato after washing it, Kojima, Japan

Cyril Ruoso / Japanese Macaque (Macaca fuscata) washing a sweet potato, Kojima, Japan

Cyril Ruoso / Japanese Macaque (Macaca fuscata) washing a sweet potato, Kojima, Japan

Cyril Ruoso / Japanese Macaque (Macaca fuscata) eating a sweet potato after washing it in the ocean, Kojima, Japan

Cyril Ruoso / Japanese Macaque (Macaca fuscata) eating a sweet potato after washing it in the ocean, Kojima, Japan

Cyril Ruoso / Japanese Macaque (Macaca fuscata) eating a sweet potato after washing it in the ocean, Kojima, Japan

Pete Oxford / Morning Glory (Convolvulaceae) in bloom, Hongryn Eels, Gobi Desert, Mongolia

Pete Oxford / Morning Glory (Convolvulaceae) in bloom, Hongryn Eels, Gobi Desert, Mongolia

Aflo / N-18305 Morning glory flowers {Turbina abutiloides}

Albert Lleal / Common Morning Glory (Ipomoea purpurea) SEM close-up view of pollen grain at 420x magnification

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 9/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 8/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 5/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 7/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 4/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 6/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 3/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 2/9, Japan

Nature Production / Morning glory {Ipomoea nil} flower opening sequence 1/9, Japan

Tom Vezo / Morning glory {Turbina abutiloides} growing up Cardon cactus, Mexico

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

Patricio Robles Gil / Morning Glory (Ipomoea sp) flowering on coastal sand dunes in Laguna Madre, Tamaulipas, Mexico

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

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) washing Sweet Potato (Ipomoea batatas), Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) washing Sweet Potato (Ipomoea batatas) before feeding on it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) washing Sweet Potato (Ipomoea batatas) before feeding on it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) feeding on Sweet Potato (Ipomoea batatas) after washing it, Miyazaki, Japan

Daniel Heuclin / California dodder (Cuscuta californica) a plant parasite, growing on Creosote bush (Larrea tridentata), Amargosa desert, Nevada, USA. May.

Daniel Heuclin / California dodder (Cuscuta californica) a plant parasite, growing on Creosote bush (Larrea tridentata), Amargosa desert, Nevada, USA. May.

Daniel Heuclin / California dodder (Cuscuta californica) a plant parasite, growing on Creosote bush (Larrea tridentata), Amargosa desert, Nevada, USA. May.

Daniel Heuclin / California dodder (Cuscuta californica) a plant parasite, growing on Creosote bush (Larrea tridentata), Amargosa desert, Nevada, USA. May.

Daniel Heuclin / California dodder (Cuscuta californica) a plant parasite, growing on Creosote bush (Larrea tridentata), Amargosa desert, Nevada, USA. May.

Roland Seitre / Scarlet creeper (Ipomoea hederifolia) in flower, wrapped around tree trunk, Abaco Islands, Bahamas.

Robert Thompson / Shrubby bindweed (Convolvulus cneorum) in flower, Ordesa National Park, Pyrenees, Northern Spain. June.

Linda Pitkin / Blue morning glory (Ipomoea indica) in flower, Arta, Mallorca, Balearic Islands. September.

Linda Pitkin / Blue morning glory (Ipomoea indica) in flower, Arta, Mallorca, Balearic Islands. September.

Jack Dykinga / Lancehair morning glory (Ipomoea pubescens) flowering amongst blades of a Soaptree yucca (Yucca elata) after monsoon rain, Catalinba State Park, Arizona, USA. September.

Jack Dykinga / Lancehair morning glory (Ipomoea pubescens) flowering amongst blades of a Soaptree yucca (Yucca elata) after monsoon rain, Catalinba State Park, Arizona, USA. September.