The ultimate source for Simon is Dioscorides Longobardus, book II, chapter QΗ' (98) ''De lappatio'' {"On sorrel"}, where it says: ''Quartu genus lapati quem multi zandam dicunt ...'' - "there is a fourth kind of lapatum which many people call zanda ...".
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The ultimate source for Simon is Dioscorides Longobardus, 2, 98, ''De lappatio'' {"On sorrel"}, where it says: ''Quartu genus lapati quem multi zandam dicunt ...'' - "there is a fourth kind of lapatum which many people call zanda ...".