Taxonomic Swap 79100
(הועלה ב 2021-01-23)
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@danaleeling Yes, historically some references have lumped them, which is (I am told) incorrect. Daniel Dooley Palmer's "Hawai'i's Ferns and Fern Allies" describes the difference: "P. scolopendria"..."a closely related, smaller, mostly epiphytic fern with thinner rhizomes, larger scales, and only five or fewer lobe pairs". He gives P. grossus "lobes 2-10 pairs (young plants simple)." So the leaf appearance helps, but only when more or less mature. Unfortunately, rhizome and rhizome scale characters, as mentioned also here https://florida.plantatlas.usf.edu/plant.aspx?id=1448 will not be accessible in many cases. https://www.jstor.org/stable/44076063 may also be helpful (it's a little too recent to be available on Biodiversity Heritage Library). Thanks for encouraging me to look into this! I've been avoiding this question for a while.
@choess yes, it should be done as with the committed https://www.inaturalist.org/taxon_changes/79101
Both kinds, Microsorum grossum and M. scolopendria needed to be valued as introduced to Hawai'i, the English naming as "Unscented oak leaf fern" seems to have been constructed by somebody. I may not know if this fern smells anyway, just think it has been named for some scent as Maile-scented or Musk fern.
Looks good to me
Works for me, I am still trying to sort out Phymatosorus scolopendria from P. grossus. Both are referred to by the same name on the islands where they occur here.