Mesophylum or Mesophyllum: How To spell?
The word Mesophylum is misspelled against Mesophyllum, a noun meaning "The parenchyma of a leaf between the skin of the two surfaces."
Mesophyllum has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings mesophy & um which should not be misspelled with single 'L'
Wrong Spelling:  mesophy-l-um  Correct Spelling:  mesophy-ll-um 
Check more misspelled words of Mesophyllum to spell it correct.