Greetings! Have you any information about the edibility of the roots/rhizones of these fern species?:

1. Asplenium bulbiferum "Hen & Chick Fern"
   
   2.+Matteuccia pensylvania "Ostrich Fern"
   
   3.+/++Polysticum munitum "Giant Holly Fern" "western Sword Fern"
   
   +species supposedly spreads fast and can be invassive.
   
   ++JLHudsen lists this species as "The thick roots were peeled and roasted in embers or cooked like potatoes with salmon eggs by Northwest Indians.
   
   Said to have a banana-like flavor" .
   
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