''Cystopteris montana,'' previously classified as ''
Athyrium montanum'', is a species of
fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except ...
known by the common name mountain bladderfern.
It occurs throughout the high
latitude
In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north po ...
s of the Northern Hemisphere, in Eurasia,
Greenland
Greenland ( kl, Kalaallit Nunaat, ; da, Grønland, ) is an island country in North America that is part of the Kingdom of Denmark. It is located between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Greenland is ...
, and
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...
, and throughout Canada. It is also present in the higher
elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § ...
s in
Colorado
Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...
farther south.
[''Cystopteris montana''.]
Flora of North America.
This fern produces a creeping, cordlike, scaly stem. The leaves are up to 45 centimeters long. The blades are borne on a
petiole with a dark base and a light-colored end. The petiole is longer than the blade. The blade is
pentagon
In geometry, a pentagon (from the Greek language, Greek πέντε ''pente'' meaning ''five'' and γωνία ''gonia'' meaning ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple polygon, simple pentagon is ...
al in shape and divided into leaflets which are subdivided into many lobed and toothed segments. The
sori are covered in hairy, whitish, cup-shaped
indusia.
[''Cystopteris montana''.]
The Nature Conservancy.
This fern grows in moist mountain habitat, such as forests near streams.[Williams, Tara Y. 1990]
In: Fire Effects Information System, nline U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.
References
External links
CalPhotos Photo Gallery
montana
Montana () is a U.S. state, state in the Mountain states, Mountain West List of regions of the United States#Census Bureau-designated regions and divisions, division of the Western United States. It is bordered by Idaho to the west, North ...
Ferns of Asia
Ferns of Europe
Ferns of the Americas
Ferns of Canada
Ferns of the United States
Flora of the Northern United States
Flora of Alaska
Flora of Greenland
{{Polypodiales-stub