Wolfian or Wolffian: How To spell?
The word Wolfian is misspelled against Wolffian, an adjective meaning "Discovered, or first described, by Caspar Friedrich Wolff (1733-1794), the founder of modern embryology."
Wolffian has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Wol & ian which should not be misspelled with single 'F'
Wrong Spelling:  Wol-f-ian  Correct Spelling:  Wol-ff-ian 
Find more incorrect spellings of Wolffian to spell right way.