David Woodfall / Red clover (Trifolium pratense) sward and Hogweed (Heracleum sphondylinium) North Uist, Outer Hebrides, Scotland, UK, July 2016.

David Woodfall / Red clover (Trifolium pratense) sward and Hogweed (Heracleum sphondylinium) at abandoned croft. North Uist, Outer Hebrides, Scotland, UK, July 2016.

David Woodfall / Red clover (Trifolium pratense) and Silverweed (Argentina anserina) growing with buttercups on machair habitat, North Uist, Scotland, UK. July.

John Shaw / Arrowleaf balsamroot (Balsamorhiza sagittata) and lupine Lupinus lepidus) in the dry hills along the eastern end of the Columbia Gorge. Washington, USA. April.

Nick Upton / Yellow restharrow (Ononis hesperia / Onis natrix hesperia) flowering on a coastal headland, Lanzarote, Canary Islands, February.

Edwin Giesbers / Star clover (Trifolium stellatum) flowering in meadow. Cyprus. April.

Edwin Giesbers / Star clover (Trifolium stellatum) flowers. Cyprus. April.

Edwin Giesbers / Orange wattle (Acacia saligna) hanging branches with flowers and leaves. Cyprus. April.

Edwin Giesbers / Orange wattle (Acacia saligna) hanging branches with flowers and leaves. Cyprus. April.

Ernie Janes / Discarded drinks can in clump of Birds foot Trefoil (Lotus corniculatus) on Holkham dunes, Norfolk

Edwin Giesbers / Star clover (Trifolium stellatum). Cyprus. April.

Ross Hoddinott / Marbled White butterfly (Melanargia galathea) resting on bird's-foot-trefoil (Lotus corniculatus), Dunsdon Nature Reserve, Devon, UK. July.

Nick Upton / Mountain slopes covered in Western gorse bushes (Ulex gallii), near Sotres, Picos de Europa, Asturias, Spain, August 2016.

Nick Upton / Mountain slopes covered in Western gorse bushes (Ulex gallii), near Sotres, Picos de Europa, Asturias, Spain, August 2016.

Ernie Janes / Wisteria growing over arch in flower, Houghton Hall garden, Norfolk, England, UK, May.

Ernie Janes / Wisteria arch in flower, Houghton Hall garden, Norfolk, England, UK, May.

Ernie Janes / Red runner bean flowers 'Scarlet Emperor' in rain shower in vegetable garden.

Ernie Janes / Peas (Pisum sativum) 'Kelvedon Wonder' growing in vegetable garden.

Ernie Janes / Laburnham X watereri 'Vossii' and white garden seat, Houghton, Norfolk, England, UK. May.

Shane P. White / Divi-divi Tree (Caesalpinia coriaria), on beach, Aruba, Caribbean

Shane P. White / Divi-divi Tree (Caesalpinia coriaria), on beach, Aruba, Caribbean

Jeff Foott / Western Redbud (Cercis occidentalis) flowering, Merced River, Yosemite National Park, California

Jeff Foott / Lupine (Lupinus sp) and Harlequin Lupine (Lupinus stiversii) flowers, Yosemite National Park, California

Duncan Murrell / Corkscrew vine (Cochliasanthus caracalla) Kinabalu Park, UNESCO World Heritage Site, Sabah, East Malaysia.

Karine Aigner / Indian peafowl (Pavo cristatus), peacock walking across track between flowering Bengal kino / Flame of the forest (Butea monosperma) trees. Ranthambore National Park, Rajasthan, India.

Suzi Eszterhas / Ahmad Azhari (Coordinator for Conservation, Sumatran Orangutan Society) with Mata 'U seedling (Afzelia xylocarpa) at replanting site, for restoration of Sumatran orangutans habitat. Sei Betung Sit...

Angelo Gandolfi / Jatoba (Hymenaea courbaril) tree. Cerrado forest, Brazil.

Jack Dykinga / Flowering lupines (Lupinus sp.), brown-eyed primrose (Chylismia claviformis) and phacelia line the desert washes beneath the Sheephole Mountains. Mojave Trails National Monument, Mojave Desert, Califo...

Jack Dykinga / Lupines (Lupinus sp.) and brown-eyed primrose (Chylismia claviformis) grow along the water course, below the eroded granite boulders that are emblematic of the park. Joshua Tree National Park, Mojave...

Mike Read / Mountain kidney-vetch (Anthyllis montana) and Bird's-foot trefoil (Lotus sp) in alpine meadow. Plateau de Beurre, Vercors Regional Natural Park, France. June.

Steven David Miller / Sulphur-crested cockatoo (Cacatua galerita) feeding on seedpods in Flax wattle (Acacia linifolia) tree. Lane Cove National Park, Sydney, New South Wales, Australia.

Jack Dykinga / Caltrops summer poppies (Kallstroemia grandiflora) blooming amid mesquite trees (Prosopis sp.) infront of the Santa Catalina Mountains. July, after summer monsoon rains. Catalina State Park, near Tucs...

Andy Sands / Small blue butterfly (Cupido minimus) female laying eggs among flowers of Kidney Vetch (Anthyllis vulneraria), Hertfordshire, England, UK, May

Bruno D'Amicis / Common laburnum (Laburnum anagyroides) in flower, in old-growth Beech (Fagus sylvatica) forest. Abruzzo, Lazio and Molise National Park / Parco Nazionale d'Abruzzo, Lazio e Molise UNESCO World Her...

Will Watson / Common carder bee (Bombus pascuorum) on Red clover (Trifolium pratense). Brown field site, Worcester, Worcestershire, England, UK. June.

Jack Dykinga / Arizona poppies (Kallstroemia grandiflora) blooming amongst Mesquite (Prosopsis sp) trees with Santa Catalina mountains in background. Post summer monsoon rain, evening light. Sonoran Desert, Catalina...

Jack Dykinga / Arizona poppy (Kallstroemia grandiflora) blooming amongst Mesquite (Prosopsis sp) trees with Santa Catalina mountains in background. Post summer monsoon rains, evening light. Sonoran Desert, Catalina...

Philippe Clement / Male Great green bush cricket (Tettigonia viridissima) stridulating amongst Common broom (Cytisus scoparius) stalks, Belgium, August.

Philippe Clement / Male Great green bush cricket (Tettigonia viridissima) on Common broom (Cytisus scoparius) stalks, Belgium, August.

David Tipling / Common linnet (Linaria cannabina) male feeding female near nest - courtship-feeding North Norfolk, England, UK. spring

David Tipling / Common linnet (Linaria cannabina) female, North Norfolk, England, UK. spring

Jack Dykinga / Bald Hills in morning coastal fog engulfing oak trees and fields of Lupins at dawn. Redwood State and National Park, California, USA, May 2018.

Jack Dykinga / Bald Hills in morning coastal fog engulfing oak trees and fields of Lupins at dawn. Redwood State and National Park, California, USA, May 2018.

Staffan Widstrand / Wild Wonders of China / Yellow pea plant flowers (Fabaceae) rain in the semi-desert, Steppe, Inner Mongolia, China

Alain Dragesco-Joffe / Cheetah (Acinonyx jubatus) resting under Acacia tree (Vachellia tortilis) Tenere, Sahara, Niger.

Jean E. Roche / Sainfoin (Onobrychis viciifolia viciifolia) Camargue, France. April.

Jean E. Roche / Starry clover (Trifolium stellatum) Camargue, France.May.

Tony Heald / Elephant (Loxodonta africana), male standing on hind legs to reach acacia pods with Cattle egrets (Bubulcus ibis) in background. Mana Pools National Park, Zimbabwe.

Tony Heald / Elephant (Loxodonta africana), male standing on hind legs to reach acacia pods. Cattle egrets (Bubulcus ibis) around elephant's feet. Mana Pools National Park, Zimbabwe.

Tony Heald / Elephant (Loxodonta africana) shaking tree for acacia pods with forest in background. Mana Pools National Park, Zimbabwe. November 2017.

Robert Thompson / Gypsy moth (Lymantria dispar) caterpillar on Clover (Trifolium sp) flower. Catlar, Pyrenees Orientales, south west France. May.

Robert Thompson / Forested mountains at Col de Mantet. Pyrenees Orientales, south west France. May 2018. Medium repro only.

Andrew Peacock / Minden / Red-bark Acacia (Vachellia reficiens) trees growing in overgrazed land, Westgate Community Conservancy, Naibelibeli Plains, Kenya

Robin Chittenden / Stonechat (Saxicola rubicola) perched on Gorse (Ulex sp). Norfolk, England, UK. June.

Andrew Peacock / Acacia (Acacia sp) tree at Sunrise, El Barta, Kenya

Juan Carlos Munoz / Common broom (Cytisus scoparius) in Pyrenean oak (Quercus pyrenaica) forest. Sierra de Guadarrama, Madrid, Spain. May, 2017.

Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) male browsing on Acacia (Acacia sp) tree at sunset, Greater Makalali Private Game Reserve, South Africa

Adrian Davies / View towards Wistman's Wood, Dartmoor, Devon, UK. August, 2017.

Matthew Maran / Calcareaous grassland including Southern marsh-orchid (Dactylorhiza praetermissa) Grass vetchling (Lathyrus nissolia) Cowslip (Primula veris) Creeping buttercup (Ranunculus repens) East Devon, Englan...

Matthew Maran / Common gorse (Ulex europaeus) East Devon, England, UK, November.

Matthew Maran / Western gorse (Ulex galli), flowers with snow, East Devon Pebblebed Heaths, Devon, England, UK, February.

Matthew Maran / Heather (Erica cinerea), Gorse (Ulex europaeus) and purple moor grass (Molina caerulea), East Devon Pebblebed Heathland, Devon, England, UK, July.

Rod Williams / Brimstone butterfly (Gonepteryx rhamni) male feeding on Everlasting sweet pea (Lathyrus latifolius) Brockley Cemetery, Lewisham, London, England, UK. July.

Rod Williams / Brimstone (Gonepteryx rhamni) male feeding on Everlasting sweet pea (Lathyrus latifolius) Brockley Cemetery, Lewisham, London, England, UK. July.

Jen Guyton / Sunset over the Camelthorn trees (Vachellia erioloba) in the Kalahari Desert, South Africa.

Jen Guyton / Sunset over the Camelthorn trees (Vachellia erioloba) in the Kalahari Desert, South Africa.

Nick Upton / Bluebells (Hyacinthoides non-scripta / Endymion non-scriptus) and Common gorse (Ulex europaeus) flowering on coastal grassland, Pentire Head, Cornwall, UK, May.

Nick Upton / Sea thrift (Armeria maritima) and Kidney vetch (Anthyllis vulneraria) flowering on clifftop, Trevose Head, Cornwall, UK, May.

Nick Upton / Red Campion (Silene dioica), Bluebells (Hyacinthoides non-scripta / Endymion non-scriptus) and Common gorse (Ulex europaeus) flowering on coastal grassland, Pentire Head, Cornwall, UK, May.

Nick Upton / Red Campion (Silene dioica), Bluebells (Hyacinthoides non-scripta / Endymion non-scriptus) and Common gorse (Ulex europaeus) flowering on coastal grassland, Pentire Head, Cornwall, UK, May.

Nick Upton / Red form of Kidney vetch (Anthyllis vulneraria) flowering on coastal grassland, Trevose Head, Cornwall, UK, May.

Nick Upton / Kidney vetch (Anthyllis vulneraria) flowering on coastal grassland, Trevose Head, Cornwall, UK, May.

Nick Upton / Kidney vetch (Anthyllis vulneraria) flowering on coastal grassland, Constantine Bay, Cornwall, UK, April.

Nick Upton / Kidney vetch (Anthyllis vulneraria) flowering on coastal grassland, Constantine Bay, Cornwall, UK, April.

Nick Upton / Horseshoe vetch (Hippocrepis comosa) flowering in a chalk grassland meadow, Wiltshire, UK, May.

Nick Upton / Horseshoe vetch (Hippocrepis comosa) flowering in a chalk grassland meadow, Wiltshire, UK, May.

Nick Upton / Horseshoe vetch (Hippocrepis comosa) flowering in a chalk grassland meadow, Wiltshire, UK, May.

Nick Upton / Red Campion (Silene dioica), Bluebells (Hyacinthoides non-scripta / Endymion non-scriptus) and Common gorse (Ulex europaeus) flowering on coastal grassland, Pentire Head, Cornwall, UK, May.

Nick Upton / Bluebells (Hyacinthoides non-scripta / Endymion non-scriptus) and Common gorse (Ulex europaeus) flowering on coastal grassland, Pentire Head, Cornwall, UK, May.

Chien Lee / Sugar Glider (Petaurus breviceps) feeding on Acacia (Acacia sp) tree sap at night, Wasur National Park, Papua, Indonesia

Ann & Steve Toon / Elephant (Loxodonta africana) bull feeding on fever tree (Vachellia xanthophloea), Zimanga private game reserve, KwaZulu-Natal, South Africa, June.

Emanuele Biggi / Camel thorn tree (Acacia erioloba) half dead and close to dune, Sossusvlei area, Namib-Naukluft National Park, Namib Desert, Namibia

Emanuele Biggi / Deadvlei with dead Camel thorn tree (Vachellia erioloba) trees Namib-Naukluft National Park, Namib Desert, Namibia

Emanuele Biggi / Sand dunes and Acacia trees, Sossusvlei, Namibia, June 2017.

Emanuele Biggi / Sossusvlei's dunes and acacia trees, Sossusvlei area, Namibia, January 2017.

Emanuele Biggi / Dead Camelthorn trees (Vachellia erioloba) on sand, Deadvlei, Sossusvlei, Naukluft National Park, Namib Desert, Namibia, June.

Nick Upton / Sweet acacia / Needle bush (Vachellia farnesiana / Acacia farnesiana) a Central American species invasive in many parts of the world on dry saline soils, growing by the coast, near Nafplio, Argolis, P...

Chien Lee / Madagascar Rosewood (Dalbergia baronii) illegally felled, Andasibe, Madagascar

Alan Williams / Buff-tailed Bumble Bee (Bombus terrestris) feeding on Tufted Vetch (Vicia cracca) at the edge of a meadow, Cheshire, UK, August

Juergen Freund / Giant seeds of the African dream herb (Entada rheedii) Daintree , Queensland, Australia

Laurie Campbell / Stonechat (Saxicola torquata) male bird on lookout perch on gorse carrying caterpillar prey to nest, Berwickshire, Scotland, April.

Laurie Campbell / Stonechat (Saxicola torquata) male bird on lookout perch on gorse carrying caterpillar prey to nest, St Abbs Head National Nature Reserve, Berwickshire, Scotland, April.

Gabriel Rojo / Calden tree (Prosopis caldenia) at sunset, pampas landscape, La Pampa, Patagonia, Argentina

Jean E. Roche / Marseille milkvetch (Astragalus tragacantha) flowers, Pomegues, Frioul archipelago, France. April.

Jean E. Roche / Marseille Milkvetch (Astragalus tragacantha) Frioul archipelago, Marseille, France. April.

Jouan Rius / Rainbow over Saguaro cacti (Carnegiea gigantea), Organ Pipe Cactus (Stenocereus thurberi) and Foothills Palo Verde tree (Cercidium microphyllum), Organ Pipe Cactus National Monument, Sonoran Desert, A...