Beneventan and central Italian notations seem to be most clearly differentiated from each other in the form of the scandicus. In Beneventan and in reformed Guidonian ‘Italo-Beneventan’ staff notations from central Italy all three elements are conjunct, ending in a vertical virga. Central Italian notations also use the disjunct form (inherited from adiastematic Italian systems) for the scandicus: two puncta and a virga. But the conjunct scandicus is also present in these sources and further research is needed to establish whether this is the result of Beneventan influence or whether the quilismatic scandicus is intended. Central Italian notation is further characterized by the two forms of the clivis (pointed and right-angled), the tendency to build long chains of notes, the right-inclined virga at the start of the climacus and moderation in the use of special neumes. The direction of the script is diagonal both ascending and descending, but the angle differs within the area.
Bent, Ian D., David W. Hughes, Robert C. Provine, Richard Rastall, Anne Kilmer, David Hiley, Janka Szendrei, Thomas B. Payne, Margaret Bent, and Geoffrey Chew. 2001 "Notation." Grove Music Online. January 20, 2001. Updated and revised July 1, 2014.
See the following example from I-Ac 693, f. 10r: