Argilaceous or Argillaceous: How To spell?
The word Argilaceous is misspelled against Argillaceous, an adjective meaning "the nature clay; consisting containing, argil clay; clayey."
Argillaceous has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings argi & aceous which should not be misspelled with single 'L'
Wrong Spelling:  argi-l-aceous  Correct Spelling:  argi-ll-aceous 
Check more misspelled words of Argillaceous to spell it correct.