Phelogen or Phellogen: How To spell?

The word Phelogen is misspelled against Phellogen, a noun meaning "The tissue of young cells which produces cork cells."

Phellogen has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings phe & ogen which should not be misspelled with single 'L'
Wrong Spelling:  phe-l-ogen 
Correct Spelling:  phe-ll-ogen 
Find more incorrect spellings of Phellogen to spell right way.