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

Shattil & Rozinski / Morning glory {Ipomoea sp} inside flower close-up, USA

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

Heather Angel / Glory lily (Gloriosa superba) bud and flower with reflexed petals and trifid stigma. Pollinated by butterflies. National flower of Zimbabwe.

Heather Angel / Flannel bush (Fremontodendron 'California Glory') exposed and overflowing nectaries fluorescuing in UV light. Native to southwest USA.

Heather Angel / Flannel bush (Fremontodendron 'California Glory') with exposed nectar glistening in sun. Native to southwest USA.

Heather Angel / Morning glory (Ipomoea tricolor) flower with pollen grains scattered by visiting insects.

Heather Angel / Flame lily (Gloriosa superba), timelapse sequence from opening bud to flowering, tepals becoming reflexed. Flower pollinated by butterflies. Controlled conditions.