Pentaphylous or Pentaphyllous: How To spell?
The word Pentaphylous is misspelled against Pentaphyllous, an adjective meaning "Having five leaves or leaflets."
Pentaphyllous has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings pentaphy & ous which should not be misspelled with single 'L'
Wrong Spelling:  pentaphy-l-ous  Correct Spelling:  pentaphy-ll-ous 
Check more misspelled words of Pentaphyllous to spell it correct.