The steampunk botanist

I'm working on a costume for a steampunk botanist. I'm finding some lovely reading here: http://www.huh.harvard.edu/libraries/fieldwork_exhibit/fieldwork.htm including this gem: "...nineteen of Linnaeus's students went of to distant lands to collect new plant specimens. Half of these students perished. Many died of fever, some were never heard from again and a few went insane."  So it's a good pedigree!

So, oh lj-land, I'm interested in your imaginative thoughts---
What could I have that would tell you I was a botanist (as opposed to anything else you might confuse me with, such as a general explorer-type)? 
And...
What could make it more steam-punky, steamy, or punky (as opposed to random-costumey)?