Part of the eternal chicory confusion, indivia can (and often does) refer to Belgian endives, but it can also mean scarola (Cichorium endivia latifolium) aka broad-leaved endive, Bavarian endive, Batavian endive, grumolo, and scarole. Then there's indivia ricciuta (Cichorium endivia crispum) or curly endives, or frisée, as the French call it, which has a more bitter taste.
Image by Javier Lastras