Luiz Claudio Marigo / Jequitiba rosa tree (Cariniana legalis) Tableland Atlantic Rainforest of Vale Natural Reserve, municipality of Linhares, Esparito Santo State, Eastern Brazil, January 2012.

Luiz Claudio Marigo / Brazil nut tree (Bertholletia excelsa) with an 8m circumference and 45m height, in the upland Amazon Rainforest at Cristalino Natural Private Patrimony Reserve, Alta Floresta, Mato Grosso State, Brazi...

Phil Savoie / Canon ball tree fruit (Couroupita guianensis) Costa Rica.

Thomas Marent / Gustavia (Gustavia augusta) flowering in flooded forest of the Amazon, Amacayacu National Park, Leticia, Colombia

Adrian Davies / Cannonball tree (Couroupita guianensis) flower, Barbados.

Adrian Davies / Cannonball tree (Couroupita guianensis) flower, Barbados.

Cyril Ruoso / Sachamangua tree (Grias peruviana) Amazon, Peru.

Cyril Ruoso / Sachamangua tree (Grias peruviana) Amazon, Peru.

Martin Willis / Common Putat (Barringtonia racemosa) flowering, Queensland, Australia

Martin Willis / Common Putat (Barringtonia racemosa) and mangroves along the Daintree River, Queensland, Australia

Konrad Wothe / Cannonball Tree (Couroupita guianensis) flowers, Panguana Nature Reserve, Peru

Stephen Dalton / Close up of Brazil nut (Bertholletia excelsa), UK.

Adrian Davies / Powder-puff tree (Barringtonia racemosa) fallen flowers on ground underneath tree. Eden Project, Cornwall, England, UK, July.

Luiz Claudio Marigo / Jequitiba rosa tree (Cariniana legalis) Tableland Atlantic Rainforest of Vale Natural Reserve, municipality of Linhares, Esparito Santo State, Eastern Brazil, January 2012.

Thomas Marent / Sea Putat (Barringtonia asiatica) flowers on volcanic black sand beach at sunrise, Tangkoko Nature Reserve, northern Sulawesi, Indonesia

Luiz Claudio Marigo / Flowers and fruit of the Cannonball tree (Couroupita guianensis), a species from the Amazon Rainforest, Rio de Janeiro city, Southeastern Brazil.

Luiz Claudio Marigo / Man harvesting Brazil nuts (Bertholletia excelsa) Amazon Upland Rainforest, Ayapua¡ community, Piagacu-Purus Sustainable Development Reserve, Ayapua¡ Lake of Purus River, Amazonas State, Brazil. April...

Ingo Arndt / Common Putat (Barringtonia racemosa) flowers on rainforest floor, Christmas Island, Indian Ocean, Territory of Australia

Luiz Claudio Marigo / Fruits of the Cannonball tree (Couroupita guianensis) in Largo do Machado Square, Rio de Janeiro city, Rio de Janeiro State, Brazil.

Philippe Clement / Brazil nuts (Bertholletia excelsa), native to South America

Philippe Clement / Brazil nuts (Bertholletia excelsa), native to South America

Thomas Marent / Sea Putat (Barringtonia asiatica) flower, Masoala National Park, Madagascar

Thomas Marent / Sea Putat (Barringtonia asiatica) flower, Masoala National Park, Madagascar

Luiz Claudio Marigo / Children of Boca do Mamirauá village sitting under a {Lecythis pisonis} tree, Lake Mamirauá, Mamirauá Sustainable Development Reserve, municipality of Alavarães, Amazonas State, Northern Brazil.

Thomas Marent / Sea Putat (Barringtonia asiatica) flowers on volcanic black sand beach, Tangkoko Nature Reserve, Sulawesi, Indonesia

Tim Laman / The large floating fruit and flower buds of a (Barringtonia sp) tree growing along a mangrove channel. Republic of Palau, Micronesia, December 2001.

Tim Laman / (Barringtonia sp) tree growing along a tidal channel. Republic of Palau, Micronesia. December 2001.

Luciano Candisani / Brazil Nut (Bertholletia excelsa) harvest collected by young Native Amazonian boy, Cajari River Ecological Reserve, Brazil

Hermann Brehm / Fruit & flowers of Cannonball tree {Couroupita quianesis} Caracas Botanical Garden, Venezuela

Luiz Claudio Marigo / Fruit of {Eschweilera albiflora} tree (food of White Uakari monkey) Matamata, Brazil

Thomas Marent / Cannonball Tree (Couroupita guianensis) flower, Pantanal, Mato Grosso, Brazil

Roland Seitre / Fish poison tree (Barringtonia asiatica) flower, Aride Island, Seychelles.

Georgette Douwma / Sea poison tree (Barringtonia asiatica) flower on beach, Triton Bay, West Papua, Indonesia.

Georgette Douwma / Sea poison tree (Barringtonia asiatica) in flower, Triton Bay, West Papua, Indonesia.

Nick Garbutt / Germinating seedling of Sea poison tree (Barringtonia asiatica) washed up on beach. Masoala Peninsula, Masoala National Park, Madagascar.

Nick Garbutt / Flower (Barringtonia sp.) fallen on black lava sand beach, Tangkoko National Park, northern Sulawesi, Indonesia.

Bruce Thomson / Yellow honeyeater (Lichenostomus flavus) perching in freshwater mangrove (Barringtonia sp.), Cape York, Queensland, Australia.

Adrian Davies / Cannonball tree (Couroupita guianensis) flowers on ground. Costa Rica