Fons hortorum redundans gratia mundum

Source: 
Wellington (New Zealand), The Alexander Turnbull Library - Rare Books, MSR-03
Folio: 
163r
Sequence: 
1
Feast: 
Praesentatio Mariae
Office/Mass: 
V
Genre: 
A
Position: 
1
Cantus ID: 
201859
Mode: 
1
Manuscript Reading Full Text (standardized spelling): 
Fons hortorum redundans gratia mundum replens caeli muneribus mater dei foecundans omnia nos restaurans supernis sedibus florens hortus mox ab infantia admirandis fulsit virtutibus
Manuscript Reading Full Text (MS spelling): 
Fons ortorum redundans gracia mundum replens celi muneribus mater dei fecundans omnia nos restaurans supernis sedibus florens ortus mox ab infancia admirandis fulsit virtutibus | ~Omnia
Indexing notes: 
Does the "Omnia" under the differentia mean to sing all the psalms of Vespers under this antiphon? Is the "lau" in black ink (but a different hand) a rubric for Lauds or a chant/psalm word?