Ista est speciosa inter

Source: 
Wolfenbüttel, Herzog August Bibliothek - Cod. Guelf. 28 Helmst. (Heinemann-Nr. 31)
Folio: 
053v
Sequence: 
11
Feast: 
De BMV post Pent.
Office/Mass: 
V
Genre: 
A
Cantus ID: 
202662
Mode: 
3
Differentia: 
G1
Differentia database: 
1--k-k-k-hj-h-g--4 82a
Extra: 
026v
Indexing notes: 
Rubric specifies commemoration of Mary from after Pentecost to Advent, and for Purification and Septuagesima;