Just for fun, do you pronounce Clematis (1) KLEH-mu-tis or (2) Kle-MAT is?

Was reading this article and found it interesting. It seems to be a regional thing, according to them. All I know is that when I was studying horticulture, we were taught the second pronunciation was correct according to Latin rules of word structure, so that's how I pronounce it. I know I'm a little anal about proper word pronunciation. I used to be worse, but I've mellowed over the years.

Clematis pronunciation debate