Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) silverback sitting on boundary wall between Volcanoes National Park and a Potato crop, looking into valley. Area to be restored to forest. Rwanda.

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

Nigel Cattlin / Tomato (Solanum lycopersicon) with blossom end rot, symptom of calcium deficiency, cultivated in glasshouse. Berkshire, England, UK. July.

Nigel Cattlin / Two-spot spider mite (Tetranychus urticae) grazing damage to Tomato (Solanum lycopersicum) leaves. Cultivated in greenhouse, Berkshire, England, UK. September.

Nigel Cattlin / Black nightshade (Solanum nigrum) flowering and with unripe berries, an annual arable weed. Berkshire, England, UK. August.

Nigel Cattlin / Red chili peppers (Capsicum sp) at food market. Bangkok, Thailand.

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.

Ingo Arndt / Sword-billed hummingbird (Ensifera ensifera) male nectaring on Red floripontio (Brugmansia sanguinea) flower. Eastern Andean slope, Ecuador. October.

Bernard Castelein / Bitter nightshade (Solanum dulcamara), Peerdsbos, Brasschaat, Belgium. July

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

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