Woodsia oregana subsp. oregana

D. C. Eaton
Endemic
Treatment appears in FNA Volume 2.

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

V2 274-distribution-map.gif

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.

"/5lengthofblade" is not declared as a valid unit of measurement for this property."thin" is not a number.

glabrescent +  and moderately glandular +
acute +  and rounded +
Michael D. Windham +
D. C. Eaton +
swollen +
simple to commonly +
pinnate-pinnatifid;linear-lanceolate;narrowly ovate +
reduced +
roundish +
Alta. +, B.C. +, Sask. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
100–2800 m +
often +  and glabrous +
occasional +
Cliffs and rocky slopes, usually on granitic or volcanic substrates +
uniseriate +
dissected +
monomorphic +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
not articulate +
reddish-brown +  and dark purple +
Sporulating summer–fall. +
not articulate +
longer than wide +
Canad. Naturalist & Quart. J. Sci. +
round +, cuplike +, hoodlike +, reniform +, falcate +  and linear +
2 +  and 3 +
bicolored;brown +
persistent +
occasional +
hairlike;lanceolate +
not spiny;entire;dentate +
scale-like +
filamentous +
discrete +
cristate +
dictyostelic +, unbranched +  and branched +
erect +  and ascending +
Woodsia oregana subsp. oregana +
Woodsia oregana +
subspecies +
expanded +
oblong +  and round +
on rock +  and terrestrial +
epiphytic +  and hemiepiphytic +
41 +, 39 +  and 38 +