I fail to see the relevance of the reference to the word fuck in the pronunciation discussion If pronounced with the original German pronunciation fook sya doesn t sound any more like fuck than the word fork does and I don t believe the possiblity of mispronunciation as fuck sya is what leads most people to say fyew sha instead Pronouncing Latinized botanical names based on words and names from non Latin languages is always going to be a problem and there is simply no rule in botanical nomenclature that such names must be pronounced according to the rules of pronunciation of their original language