Flora of North America species comparison

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Woodsia oregana subsp. oregana
Photo is of parent taxon

Oregon cliff fern, Oregon fern, western cliff fern
Cells

on pinnule margins regular in shape, margins appearing entire;

adaxial epidermal cells averaging less than 120 µm. Spores averaging 39–45 µm. 2n = 76.

Woodsia oregana subsp. oregana
Phenology Sporulating summer–fall.
Habitat Cliffs and rocky slopes, usually on granitic or volcanic substrates
Elevation 100–2800 m (300–9200 ft)
Distribution
from FNA
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC; SK
[BONAP county map]
Discussion

The leaves of Woodsia oregana subsp. oregana tend to be narrower and less glandular than those of subsp. cathcartiana. The two subspecies hybridize in the narrow region of sympatry; hybrids are sterile triploids with malformed spores.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Dryopteridaceae > Woodsia > Woodsia oregana
Sibling taxa
W. oregana subsp. cathcartiana
Name authority D. C. Eaton
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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