The manuscript transmission of the so-called Stroma of Rolandus, considered to be the second-oldest Summa on Gratian, is so complex and diversified that one ought to ask whether it really constitutes a single work. The present writer as a young man followed Thaner, Schulte, and others in his Repertorium der Kanonistik, without even asking the question. In the present Note he sets out to answer it in the negative.
C.1-C.36 of the work is transmitted without Part I, which only MS Stuttgart HB VI.63, fos. 1-34, combines with the other parts. We have C.1-C.26 in nine manuscripts, without counting the Cambridge fragment, University Library addition 3321 (on C.1-C.4 q.3, C.13-C.23) and the Zürich manuscript (see below), but with a new manuscript added in Liège, Grand-Séminaire 6.N.15, fos.147r-178r, and a new fragment in Heiligenkreuz 44. MS Zürich, Zentralbibliothek (Stadtbibliothek) C.97 is a different work, the Summa Turicensis. C.27-C.36 is given a title of its own, De coniugio, in all but two manuscripts. It is transmitted by itself in Berlin lat. 462, Bologna, Archiginnasio A.48, Grenoble 627, and divided from the relatively short Summae on C.1-C.26, which follow it in London, British Library MS 11.B.ii and Worcester, Cathedral Chapter, Q.70 (in Worcester, these Summae are incomplete and end at C.19 q.1).