Inspired by this awesome question, I'm looking for the corresponding maximum: what is the highest air pressure at which plant life can survive?
For example, Venus's atmosphere is about 90x as dense as Earth's. Aside from the other obvious factors, like sulphuric air and boiling temperatures and otherwise resembling hell in every possible way, can plant life survive in such a condition?
Additionally, are some types of plant life more adaptable to high pressure environments than others? (I'm assuming an air environment, and excluding deep-sea life, etc.)