Mountain laver

from The Collaborative International Dictionary of English v.0.48
Laver \La"ver\ (l[=a]"v[~e]r), n.
   The fronds of certain marine alg[ae] used as food, and for
   making a sauce called laver sauce. Green laver is the {Ulva
   latissima}; purple laver, {Porphyra laciniata} and {Porphyra
   vulgaris}. It is prepared by stewing, either alone or with
   other vegetables, and with various condiments; -- called also
   {sloke}, or {sloakan}.
   [1913 Webster]

   {Mountain laver} (Bot.), a reddish gelatinous alga of the
      genus {Palmella}, found on the sides of mountains
      [1913 Webster]
    

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