The word Prothalia is misspelled against Prothallia, which is plural of "Prothallium"
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Prothallia has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings protha & ia which should not be misspelled with single 'L'
Wrong Spelling: protha-l-ia
Correct Spelling: protha-ll-ia
Find more incorrect spellings of Prothallia to spell right way.