Unfortunately, or maybe fortunately, depending on your view, what counts in the naming of a species is priority in publishing. You could choose to name a species after Adolf Hitler or Charles Manson, and it would be acceptable if proper procedures were followed, and the earliest publication has priority. If Olaf is right, and peruvanum had been used before on a different plant, there is no escaping the correctness of the name "kovachii", regardless of how offensive it may seem. Thousands of species are named every year.....most are tiny little insects or invisible fungi, and no one cares about who gets honored....The spectacular finds that inspire passions, like P. kovachii, are literally 1 in many 1000's...it doesn't make sense to re-write the rules of scientific priority that have been in place for decades, if not more than a century, for these very rare exceptions....Take care, Eric