"Invalid" is already used in scientific notation and has a specific meaning. It goes immediately after the binomial, Alocasia × amazonica Reark [Invalid] and isn't part of the status field.
Need a different status term: "Unfounded", "False" (both meaning not based on fact); or leave completely blank?
Perhaps I'm using "type-ahead" differently. In my database, for a field that is pre-populated with a value list in which only one selection is allowed, I can enter a "p" that jumps to value list items beginning with the letter "p" rather than having to scroll through the whole list starting with "a". Is that what you're saying can't be done? And, yes, I did suggest pre-populating the reference field in my previous post.
The alternative of everyone entering whatever they wish makes my teeth ache. But then I'm from the old school of database design that emphasizes consistency of values that occur across the db.
Nice on the automatic hyperlink.