Propylaa or Propylaea: How To spell?

The word Propylaa is misspelled against Propylaea, which is plural of "Propylaeum"

--> Propylaea has vowels 'ae' together mispronounced as 'a'
Word contains consecutive vowels 'AE' in between alphabets propyl & a is misspelled as 'A'
Wrong Spelling:  propyl-a-a 
Correct Spelling:  propyl-ae-a 
Find more incorrect spellings of Propylaea to spell right way.

-->

You might be interested to know

Tanidia or Taenidia?

Bougainvillea or Bougainvillaea?

Epigea or Epigaea?