John Shaw / Hybrid Poplar tree plantation in autumn (Populs sp.). Boardman Tree Farm, near Irrigon, Oregon, USA. October.

Pete Oxford / Pink flowers (Triplaris sp) at edge of water, Northern Pantanal, Mato Grosso, Brazil.

Luiz Claudio Marigo / 'Novateiro' Tree (Triplaris brasiliana) flowering on the shore of Paraguay River at the Pantanal of Mato Grosso, Taiama Ecological Station, Mato Grosso State, Western Brazil

Hermann Brehm / Cloud forest with red flowering trees {Triplaris caracassana} Henri Pittier NP, Venezuela, South America

Thomas Marent / Ant Tree (Triplaris americana) flowering, Pantanal, Mato Grosso, Brazil

Jami Tarris / Palo Santo (Triplaris sp) trees reflected in water, Tagus Cove, Isabela Island, Galapagos Islands, Ecuador

Murray Cooper / Palo Santo (Triplaris cumingiana) tree flowering, Choco Rainforest, Ecuador

Mark Moffett / Photographer, Mark Moffett on assignment, National Geographic May 1999, shown sitting near Triplaris Ant tree, Peru

Mark Moffett / Photographer, Mark Moffett on assignment, National Geographic May 1999, shown sitting near Triplaris ant tree, Peru

Mark Moffett / Ant (Pseudomyrmex sp) biologist Doug Yu plucks ants from Palo Santo (Triplaris sp) tree whose base cleared of vegetation by the ants, Peru