The word Pistilida is misspelled against Pistillida, which is plural of "Pistillidium"
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Pistillida has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings pisti & ida which should not be misspelled with single 'L'
Wrong Spelling: pisti-l-ida
Correct Spelling: pisti-ll-ida
Find more wrongly spelled words of Pistillida to spell it well.