Fern identification external links

Verdigris is a specialist fern nursery located in the foothills of the Clyde Mountain Range, about 25km inland from Batemans Bay, NSW, Australia. They have an extensive collection of pictures of ferns.
This site provides information about all aspects of nature in the beautiful Vumba mountains, situated in the Eastern Highlands of Zimbabwe. This link takes you to the Fern species list
This illustrated checklist is a continuation of the works of Elmer D. Merrill (1876-1956) and Leonardo L. Co (1953-2010), authorities on the Philippine vascular Flora.
This link takes you to the Pteridophytes section (Lycophytes & Monilophytes)
Plants of Saint Lucia - A Pictorial Flora of Wild and Cultivated Vascular Plants
The "Albums" have sections on Ferns
Lindsay, S. & Middleton, D.J. (2012 onwards). Ferns of Thailand, Laos and Cambodia.
The HFF fern database is organized by latin and common names as well as categories such as drought tolerant, groundcover, evergreeen etc
Serpocaulon obscurinervium (Polypodiaceae), a new fern species
from Colombia and Ecuador
JNCC Protected Sites: Special Areas of Conservation
This is a photographic record with a personal commentary of some of the plants seen during the annual excursions into the countryside of an amateur field botanist. This link takes you to the fern section.
This website focuses exclusively on leptosporangiate ferns. The photographs were taken in Spain, Portugal, France, Austria, Italy, Germany and USA.

The website of the British Pteridological Society