I would totally do that, if I knew that I was pronouncing the words correctly...since I'd always said "semperveevum" and just assumed that was correct, and then you and Trish were saying "sempervievum" and sounding "official" I totally thought I had to begin changing how I said the plant name!
If there was a link to a talking dictionary website then those of us willing to record names would know the "standard" pronunciation.
I very much liked on DG where they have the pronunciation written out, I found that very helpful! I like feeling that I'm pronouncing a word correctly!