[1] : The Collaborative International Dictionary of English v.0.48

mouse-ear \mouse"-ear`\, n. bot.
      a the forget-me-not myosotis palustris and other
          species of the same genus.
      b a european species of hawkweed hieracium
          pilosella.
          1913 webster

   mouse-ear chickweed, a name of two common species of
      chickweed cerastium vulgarium, and cerastium
      viscosum.

   mouse-ear cress, a low cruciferous herb sisymbrium
      thaliana. all these are low herbs with soft, oval, or
      obovate leaves, whence the name.
      1913 webster
see also:
myosotis palustris hieracium pilosella mouse-ear chickweed cerastium vulgarium cerastium viscosum mouse-ear cress 
sisymbrium thaliana 

Sisymbrium >> S Words
Sisymbrium, definition of term: Sisymbrium
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