Juan Manuel Borrero / Tree ferns (Cyatheales) in laurisilva forest. Natural Monument of Caldeira Velha, Ribeira Grande, Sao Miguel Island, Azores, Portugal.

Tim Laman / Ferns along a rain forest stream. Batang Toru Forest, Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia.

Duncan Murrell / Tree ferns on the Mangamate Track in Whirinaki Forest Park, North Island, New Zealand.

Duncan Murrell / Tree ferns on the Mangamate Track in Whirinaki Forest Park, North Island, New Zealand.

Duncan Murrell / Tree ferns on the Mangamate Track in Whirinaki Forest Park, North Island, New Zealand.

Duncan Murrell / Tree ferns in Whirinaki Forest Park, North Island, New Zealand.

Duncan Murrell / Tree ferns in Whirinaki Forest Park, North Island, New Zealand.

Duncan Murrell / Tree ferns, Lake Waikaremoana, Te Urewera National Park, North Island, New Zealand.

SCOTLAND: The Big Picture / Bracken (Pteridium aquilinum) in Birch woodland (Betula pendula) in late autumn, Scotland, UK, October.

Steven David Miller / A male Australian King parrot (Alisterus scapularis) standing in a tree fern, Cania Gorge National Park, Queensland, Australia.

David Pattyn / Old trees covered with ferns, orchids and bromeliads in typical high altitude rainforest, Bellavista private reserve, Mindo cloud forest area, Ecuador, July

David Pattyn / Fern covered trees with orchids and bromeliads, Bellavista private reserve, Mindo cloud forest area, Pichincha, Ecuador , July