Patelae or Patellae: How To spell?

The word Patelae is misspelled against Patellae, which is plural of "Patella"

Patellae has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings pate & ae which should not be misspelled with single 'L'
Wrong Spelling:  pate-l-ae 
Correct Spelling:  pate-ll-ae 
Explore spell check of Patellae to spell without errors.