Asplenium trichomanes subsp. trichomanes

Linnaeus
Synonyms: Asplenium melanocaulon unknown
Treatment appears in FNA Volume 2.
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Illustrator: John Myers
Spores (as measured in Hoyer's Solution) 27–32 µm. 2n = 72.

Habitat: Acidic rocks such as sandstone, basalt, and granite, very rarely on calcareous rocks
Elevation: 0–3000 m

Distribution

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B.C., N.B., Nfld., N.S., Ont., Que., Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., Ga., Ill., Ind., Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Mo., Nebr., N.H., N.J., N.Mex., N.Y., N.C., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., Wash., W.Va., Wis., Wyo., Mexico in Chihuahua, Europe, Asia, Africa, Australia.

Discussion

In southern Illinois Asplenium trichomanes subsp. trichomanes hybridizes with A. rhizophyllum to produce A. × shawneense (R. C. Moran) H. E. Ballard (R. C. Moran 1981).

References

None.

Lower Taxa

No lower taxa listed.