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

saxifrage \sax"ifrage\ ?; 48, n. l. saxifraga, from
   saxifragus stone-breaking; saxum rock + frangere to break:
   cf. f. saxifrage. see fracture, and cf. sassafras,
   saxon. bot.
   any plant of the genus saxifraga, mostly perennial herbs
   growing in crevices of rocks in mountainous regions.
   1913 webster

   burnet saxifrage, a european umbelliferous plant
      pimpinella saxifraga.

   golden saxifrage, a low half-succulent herb
      chrysosplenium oppositifolium growing in rivulets in
      europe; also, chrysosplenium americanum, common in the
      united states. see also under golden.

   meadow saxifrage, or pepper saxifrage. see under
      meadow.
      1913 webster
see also:
fracture sassafras saxon saxifraga burnet saxifrage pimpinella saxifraga 
golden saxifrage chrysosplenium oppositifolium chrysosplenium americanum golden meadow saxifrage 
pepper saxifrage meadow 

[2] : WordNet (r) 2.0

chrysosplenium americanum
     n : aquatic herb with yellowish flowers; central and western
         united states syn: water carpet, water mat
see also:
water carpet water mat 

Chrysosplenium >> C Words
Chrysosplenium, definition of term: Chrysosplenium
chrysosplenium_pag1.html