Because Joely and Ed were disappointed in my attempt at lazy humor. I have acquiesced and decided to try the X's again. In searching for words that begin with X, I discovered that I am quite the xenophile.
I thought about doing this all with Ex but spelled with X so I could use words like Xcrement. But I decided I would take a brow beating for that as well.
Now that I've built up all this xcitement let's go ahead and try this:
Xylocarpous Xenopus Xenocrystic Xylan