Hymenophyllum

Taxobox
name = Hymenophyllum


image_width = 240px
image_caption = "Hymenophyllum tunbrigense" in Luxembourg
regnum = Plantae
phylum = Polypodiophyta
classis = Polypodiopsida
ordo = Hymenophyllales
familia = Hymenophyllaceae
genus = "Hymenophyllum"

"Hymenophyllum" is a genus of ferns in family Hymenophyllaceae. Its name means "membraneous leaf," referring to the very thin translucent tissue of the fronds, which gives rise to the common name Filmy Fern for this and other thin-leaved ferns. The leaves are generally only one cell thick and lack stomata, making them vulnerable to desiccation. Consequently, they are found only in very humid areas, such as in moist forests and among sheltered rocks. They are small and easy to overlook.

pecies

* "Hymenophyllum alveolatum", C.Chr.
* "Hymenophyllum barbatum"
* "Hymenophyllum brachypus", Sodiro
* "Hymenophyllum contractile", Sodiro
* "Hymenophyllum cristatum", Hook. & Grev.
* "Hymenophyllum flabellatum", Labill.
* "Hymenophyllum helicoideum", Sodiro
* "Hymenophyllum megistocarpum", (Copel.) C.V.Morton
* "Hymenophyllum nanum", Sodiro
* "Hymenophyllum refrondescens", Sodiro
* "Hymenophyllum sodiroi", C.Chr.
C.Chr.
* "Hymenophyllum tenerum", Bosch
* "Hymenophyllum trifidum", Hook. & Grev.

ee also

Trichomanes, the members of which are also called Filmy Ferns.

External links

* [http://www.floracam.co.uk/ferns/html/hymenophyllum.html Ferns of the genus "Hymenophyllum" observed in Cornwall]
* [http://homepages.caverock.net.nz/~bj/fern/hymenophyllum.htm More complete list of species]
* [http://www.floralimages.co.uk/phymentunbr.htm Detailed photography of "Hymenophyllum tunbrigense"]
* [http://www2.auckland.ac.nz/info/schools/nzplants/fern_filmy.htm Photographs of several New Zealand species]