Cleustogamous or Cleistogamous: How To spell?

The word Cleustogamous is misspelled against Cleistogamous, an adjective meaning "Having, beside the usual flowers, other minute, closed flowers, without petals or with minute petals; -- said of certain species of plants which possess flowers of two or more kinds, the closed ones being so constituted as to insure self-fertilization."

Word contains consecutive vowels 'EI' in between alphabets cl & stogamous is misspelled as 'EU'
Wrong Spelling:  cl-eu-stogamous 
Correct Spelling:  cl-ei-stogamous 
Check more misspelled words of Cleistogamous to spell it correct.