permanent institution in 1842 when the united states exploring expedition, also sometimes called the wilkes expedition, returned from a four-year voyage in the pacific ocean at the behest of congress, mainly doing some surveying, but also picking up a whole bunch of natural science artifacts, including living plant specimens. in 1842, with the expedition returned, they had 150 fascinating tropical plant species, many of which had never before been on the american continent. this was deemed very valuable. this collection of plants was immediately recognized as important by congress. funds were appropriated for a temporary greenhouse structure to house them while a permanent garden could be built. we still have to this day a couple of plants that are direct descendents of those plants. the cycads we just looked at, the one on the left is one of the original plants. subsequent to its introduction to the united states, it has become a relatively important tree species in terms of ornamental tree in the tropical parts of the united states, and specifically in southern florida. as with most things in life i