The American Fern Society is over 100 years old. With over 900 members worldwide, it is one of the largest international fern clubs in the world. It was established in 1893 with the objective of fostering interest in ferns and fern allies. To this end it encourages correspondence and the exchange of information and specimens between members via its newsletter the Fiddlehead Forum. This web page is designed to expand on this exchange of information with amateurs and professionals around the world. We hope that in this way many more people will be able to explore these interesting plants and their allies. ... [Information of the supplier]
During the first thirty years of Atlas Florae Europaeae (AFE), the basic technology for the collection of distribution data and publication of distribution maps has remained practically unchanged. Manual map production as such is rather tedious. Furthermore, distribution data available only on printed maps are not suitable for further (computerized) analyses. The construction of the Atlas Florae Europaeae database was started in 1992. The primary goal was to make the distribution data available in digital format, and the additional goal was the computerization of the editorial process of AFE. The printed AFE distribution maps were processed this way: - the maps were scanned at 300 dpi resolution / - locations of the grid cells (4419) were calculated on the scanned bitmap images / - arrays of black pixels were searched from the bitmaps using custom software / - the map originals and and their interpretation were compared using custom software. So far all printed AFE volumes (1 to 12) have been processed this way. ... [Information of the supplier]
Hier haben Sie die Möglichkeit, nach in den gemäßigten Klimazonen beheimateten Farnen zu suchen und sich jeweils deren Eigenschaften anzuschauen. [Information des Anbieters]
Selection of morphological traits from pull down-menus allows the identification of Great Britain's about 60 fern species. Most of the species occur in Central Europe as well. [Editorial staff vifabio]
This website is dedicated to the pteridophyte flora (ferns, horsetails and clubmosses) of the Grand-Duchy of Luxembourg. In the last decades, ferns and allied plants - especially subspecies and hybrids - were often neglected by botanists in Luxembourg, so that reliable data about distribution and status of pteridophyte species is often lacking. Over the last few years, the study of the pteridophytes of Luxembourg was relaunched, and the existing information deficiencies are progressively reduced. Luxembourg is internationally known for the relictual populations of Hymenophyllum tunbrigense (L.) Smith (Tunbridge filmy-fern), first discovered in this continental island in 1821. But Hymenophyllum is not the only interesting fern in Luxembourg. Despite the small territory of the Grand-Duchy of Luxembourg, the diversity of pteridophytes is remarkable. Not less than 62 pteridophytes (species, subspecies, nothosubspecies and hybrids) are known for Luxembourg. More than 95% of all pteridophytes known in Luxembourg occur or have occurred in the 'Petite Suisse' area. Not to be underestimated is the diversity on Devonian schist. Regrettably a certain number of species haven't been observed in the last decades and can be considered as extinct in wild. Fortunately new taxons were discovered recently. At present date the pteridophyte flora of Luxembourg counts 5 clubmosses, 7 horsetails and 50 ferns. Let's hope that these numbers aren't decreasing in future. ... [Information of the supplier]
This LUCID3 interactive key can be used to identify all currently recognized ferns and lycophytes in the Southern Rocky Mountain Region (SRMR), an area with high plant diversity rich in endemic species. This key follows the nomenclature of Flora North America (FNA) using an adapted checklist of ferns and lycophytes documented in the SRMR (Snow, 2004). To form an interactive key to the 84 fern and lycophyte taxa in the SRMR, characters that define the similarities and differences among species were entered into Lucid software (version 2.1). We adapted a key to the families of vascular plants of the SRMR (Brasher and Snow, 2003) to best identify deterministic characters of SRMR ferns and lycophytes. This interactive key and corresponding taxon fact sheets were informed by a literature review (FNA, 2003; Weber and Wittmann, 2001b and b; Spackman et al., 1999; Dorn, 1988; Lellinger, 1985; Mickel,1971; Sporne, 1968; Harrington, 1954 and 1950; Harrington and Durrell, 1950; Parsons, 1911), observations of herbaria specimens (COLO, COCO, GREE) and personal observations during twelve collection trips in Colorado. This information was supplemented by a key to Colorado’s ferns and lycophytes, presented by Tom Ranker at the Colorado Native Plant Society Workshop (2003). ... [Information of the supplier]
This chart of fern families is designed by David Rydeheard, and is available for on-line viewing or as a poster. The chart includes familiar fern names as well as scientific names. It uses the latest molecular (genetic) phylogenies; the fine-structure of relationships between families is depicted. [Information of the supplier, translated]
Ferns are a conspicuous element of the vegetation of most tropical regions. They occur in a wide variety of habitats from freshwater ponds and swamp areas to terrestrial plants in forest at all altitudes to lithophytic on rocks or epiphytic on tree trunks or branches. They are frequently overlooked in biodiversity surveys, in part because they are difficult to identify for the non-specialist. In this website we hope to address this problem and to promote Southeast Asian ferns as an integral part of Asia’s vascular plant diversity. This website aims to provide comprehensive lists of all species of ferns known from Thailand, Laos and Cambodia; provide a Factsheet for each species which lists such information as the correct name and its synonym(s), a description, its distribution and its conservation status; and to provide a multi-access key to identify all species. The information contained within this website is only as good as the information that has become available through fieldwork and herbarium collections made. Laos and Cambodia have amongst the lowest plant collection densities for Asia so it is very likely that many species will eventually be found in those countries that have yet to be recorded. Even for Thailand new records and new species are regularly reported. We hope to ensure that this website is kept up-to-date with new discoveries as and when they are reported. ... [Information of the supplier]
I've established this site on ferns and fern allies in order to communicate information from research that I've done, and hope that others find it useful. I welcome any feedback from other people interested. [Information of the supplier]
