penthorum sedoides

from The Collaborative International Dictionary of English v.0.48
Stonecrop \Stone"crop`\, n. [AS. st[=a]ncropp.]
   1. A sort of tree. [Obs.] --Mortimer.
      [1913 Webster]

   2. (Bot.) Any low succulent plant of the genus {Sedum}, esp.
      {Sedum acre}, which is common on bare rocks in Europe, and
      is spreading in parts of America. See {Orpine}.
      [1913 Webster]

   {Virginian stonecrop}, or {Ditch stonecrop}, an American
      plant ({Penthorum sedoides}).
      [1913 Webster]
    

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