Also, the herbarium set was a standing set
and we no doubt would have seen more of it if had there been a fourth season. It was going to be featured in another third season episode as well -the title of which escapes me at the moment- but was cut from the final broadcast.
Here's an MJ sketch of the set (center column, second from the last image)...
And here’s a sketch for another set (that was apparently never built) that adjoins it (bottom three images)... [COLOR=#800080]http://www.trekcore.com/specials/thumbnails.php?album=3&page=7[/COLOR]
That last table thingy was
apparently built, as it (and another?) is apparently seen in ITITNB
There is also a floor plan sketch in The Art of Star Trek
that shows how these two sets were supposed to fit together –rather like FJ had his deck 18 rec facilities in his BOGP.