From Natural History of Southeast Alaska
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Family: Aspleniaceae

Group: Vascular Plant, Species

Scientific NameCommon NameSummary
Asplenium adulterinumAdulterated SpleenwortOfficially known only from Vancouver Island, the FNA account of this hybrid between Maidenhair Spleenwort (Asplenium trichomanes) and Green Spleenwort (Asplenium trichomanes-ramosum) suggests it could be expected elsewhere. A plant with the (apparently diagnostic, key-wise) character of partially brown rachis was photographed (but not collected) at Red Bluff Bay.
Asplenium trichomanesMaidenhair SpleenwortSmall evergreen fern with ovate pinnae which is expected to occur, but seems to be less common than A. trichomanes-ramosum. Two subspecies indicated in FNA, with ssp. trichomanes expected in the southern half of the region (FNA map) on acidic substrates, while ssp. quadrivalens (which occurs on limestone) not thought to occur in the region (FNA map). However, most collections from Southeast Alaska have been made from limestone, so further investigation may be warranted.