Pascal Kobeh / Golden barrel cactus (Echinocactus grusonii) in the Jardin de Cactus in Guatiza, Lanzarote, Canary Islands.

Heather Angel / Mandrinette (Hibiscus fragilis), cultivated in breeding program at Kew Gardens, London, UK. Endemic to Mauritius.

Heather Angel / Pygmy Rwandan water lily (Nymphaea thermarum) in cultivation at Kew Gardens, London, England, UK. Extinct in the wild. Native to thermal springs, Rwanda.

Nick Upton / Group of Golden Barrel Cacti (Echinocactus grusonii), with dead flowers, a species endemic to Mexico, at the Jardin de Cactus, Lanzarote, Canary Islands, February.

Nick Hawkins / Galapagos prickly pear (Opuntia echios), a vulnerable species. Isabela Island, Galapagos.

John Cancalosi / Golden barrel cactus (Echinocactus grusonii). Endemic to Mexico.

Eladio Fernandez / Dominican cherry palm (Pseudophoenix ekmanii) flower, Hispaniola.

Eladio Fernandez / Puerto Rico palmetto (Sabal causiarum) trees on hillside, Hispaniola.

Eladio Fernandez / Palmiste marron (Pseudophoenix lediniana), Hispaniola.

Eladio Fernandez / Palmiste marron (Pseudophoenix lediniana) palm tree in tropical forest, Hispaniola. August 2014.

Eladio Fernandez / Palm tree (Copernicia ekmanii) with sailing boat in background. Hispaniola. August 2014.

Eladio Fernandez / Ekmans silver palm(Copernicia ekmanii) trees overlooking Caribbean Sea, Hispaniola.