Riccia trichocarpa makes my head hurt

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I’ve been having some… problems with the scientific literature on R. trichocarpa.

Does anyone know:

  • which of the two taxonomic claims are correct: “easily separated from all Californian lookalikes by its long whitish/yellowish hairs” or “can only be IDed from spores; the hairs are non-diagnostic”?

  • Whether the purplish dots that form around sporophytes turn green in deep shade?

  • How to recognize unfertilized females without resorting to a microscope?

  • Whether fertilized females remain fertilized after entering drought dormancy (and then rehydrating)?

Thanks!

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Please email me and I will send you a pdf of the genus Riccia extracted from the Guide to Oregon Liverworts which I offer on my website:
http://fernzenmosses.com/products-page/

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