Penyroyal or Pennyroyal: How To spell?
The word Penyroyal is misspelled against Pennyroyal, a noun meaning "An aromatic herb (Mentha Pulegium) of Europe; also, a North American plant (Hedeoma pulegioides) resembling it in flavor."
Pennyroyal has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings pe & yroyal which should not be misspelled with single 'N'
Wrong Spelling:  pe-n-yroyal  Correct Spelling:  pe-nn-yroyal 
Find more incorrect spellings of Pennyroyal to spell right way.