You are getting closer, well done
The problem is that the list needs to be constructed using the proper functions, as it cannot be taken as a literal.
To be taken as a literal, (i.e. not evaluated), an apostrophe must be used, but, in your case, you cannot use this method as you need to evaluate the variables within your list.
The error occurs because elements of your list are interpreted as function expressions, e.g.
("BOTANICAL" species)
Is attempting to evaluate "BOTANICAL" as a function, which, of course, it is not.
To construct the list, look into using the
list function, (and
cons function if you want to use a dotted pair)