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Asplenium trichomanes Linnaeus. Maidenhair Spleenwort. Phen: May-Oct. Hab: Moist outcrops of slightly to strongly calcareous sedimentary or metamorphic rocks and moderately to strongly mafic metamorphic and igneous rocks, such as limestone, dolostone, mafic and intermediate gneisses and schists, amphibolite, most typically in strong shade, as under overhangs. Dist: A. trichomanes as a whole is a complex, with diploid, tetraploid, and hexaploid elements, occurring in North America, Europe, Australia, New Zealand, and Asia. A. trichomanes s.s. is known to occur in Europe and North America (at least); in North America, it ranges from NL (Newfoundland) to BC, south to NC, c. GA (Jones & Coile 1988), c. AL, AR, OK, w. TX, CHI, se. AZ, and w. OR.

Origin/Endemic status: Native

Taxonomy Comments: A. trichomanes is a diploid, involved as one parent in the origin of A. quadrivalens.

Synonymy: = FoC2-3; = Asplenium trichomanes L. ssp. trichomanes – Ar, FNA2, Il, K1, K3, K4, Mo1, NE, NY, Pa, TxFerns, Va, W; < Asplenium trichomanes L. – C, F, G, GrPl, Ok, RAB, S13, Sf, Tat, Tn, Tx, WH3, WV

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC
  • Eastern Mountains and Piedmont: FAC (taxonomic split from wetland indicator species)
  • Great Plains: FAC (taxonomic split from wetland indicator species)
  • Midwest: UPL (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: UPL (taxonomic split from wetland indicator species)

Heliophily: 1

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image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Alan Cressler: Asplenium trichomanes, Cohutta Wilderness, Chattahoochee National Forest, Fannin County, Georgia 2 by Alan Cressler source | Original Image ⭷
image of plant© Edwin Bridges | Original Image ⭷
image of plant© Edwin Bridges | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷

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