Woodsia oregana subsp. oregana

D. C. Eaton
Treatment appears in FNA Volume 2.
Revision as of 13:15, 27 July 2019 by FNA>Volume Importer

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.


Phenology: Sporulating summer–fall.
Habitat: Cliffs and rocky slopes, usually on granitic or volcanic substrates
Elevation: 100–2800 m

Distribution

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Alta., B.C., Sask., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

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.

Selected References

None.

Lower Taxa

None.
Michael D. Windham +
D. C. Eaton +
Alta. +, B.C. +, Sask. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
100–2800 m +
Cliffs and rocky slopes, usually on granitic or volcanic substrates +
Sporulating summer–fall. +
Canad. Naturalist & Quart. J. Sci. +
Illustrated +  and Endemic +
Woodsia oregana subsp. oregana +
Woodsia oregana +
subspecies +