You have been doing it correctly. You use the digestible carbs, or what other LC plans call ECC for effective carb count.

A floret is one of the small bunches with a little stem.

funny how we often name things differently. Snow trees is so appropriate if you are a kid! We always called garlic cloves "garlic toes"

There's a carb counter here at this site too. It has a much more extensive listing than in the book. Look over to the right. near the bottom of the quicklinks listing, and click on Carbohydrate Counter if you need to find something not in the book.