1. 
   regnellidium
   [n] - small latex-containing aquatic fern of southern Brazil
   Found op http://www.webdictionary.co.uk/definition.php?query=regnellidium
   
   
2. 
   regnellidium
   Regnellidium diphyllum noun small latex-containing aquatic fern of southern Brazil
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=regnellidium
   
   
3. 
   Regnellidium
   (from the article `Marsileaceae`) ...has cloverlike leaves with four leaflets and is widely distributed. Pilularia (pillwort), also nearly cosmopolitan, with six species, has ... ...(nutlike receptacles) along petiole; heterosporous.Family MarsileaceaeThree genera—Marsilea (waterclover), Pilula...
   Found op http://www.britannica.com/eb/a-z/r/27
   
   
4. 
   Regnellidium
   Regnellidium is a monotypic genus of ferns of family Marsileaceae. The single living species, Regnellidium diphyllum, Two-leaf Water Fern, is native to South Eastern Brazil and adjacent regions of Argentina. It resembles its relatives from the genus Marsilea, but has 2-lobed leaves (rather than 4)....
   Found op http://en.wikipedia.org/wiki/Regnellidium
   
   
5. 
   regnellidium
   1) Aquatic fern 2) Regnellidium diphyllum 3) Small latex-containing aquatic fern of southern brazil 4) Water fern
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/regnellidium/1
   
   

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