[Trinity] Plant identification in Trinity College MS O.2.48 Apuleii Herbarium

[ReneZ]

The name of the plant is Nepitella, others call it Neputella | Others herba Attraras[?] Others call it Gatara | It is called "herba Gatara" because iS[?] says that if a female cat is | in love [i.e. in heat] and eats of this plant, without | coitus with a male cat, it is said she will be pregnant. ...

I guess the abbreviation highlighted in blue is the name of the author who discussed this legend. I have been unable to identify him or find another discussion of this legend. If it really reads "is" it could be Isidore of Seville, but I really can't tell.

I wonder if this is not a capital D, in which case Dioscurides would be a good option.

Edit: I see this has already been suggested and tested.