sandwort

from WordNet (r) 3.0 (2006)

sandwort
    n 1: loosely matted plant with moss-like foliage studded with
         tiny starry four-petaled white blossoms; mountains of
         central and southern Europe [syn: {sandwort}, {Moehringia
         mucosa}]
    2: low-growing herb having clusters of small white four-petaled
       flowers [syn: {sandwort}, {Moehringia lateriflora}]
    3: low-growing chiefly perennial plant usually with small white
       flowers suitable for e.g. rock gardens

from The Collaborative International Dictionary of English v.0.48

Sandwort \Sand"wort`\, n. (Bot.)
   Any plant of the genus {Arenaria}, low, tufted herbs (order
   {Caryophyllaceae}.)
   [1913 Webster]