Alchemical Symbolism in the VMS

[Barbrey]

The following manuscript is, according to a critical edition by Udo Benzenhöfer, one of the oldest editions of the Liber de consideratione:

Salzburg, Universitätsbibliothek, M II 180
MEDIZINISCH-NATURWISSENSCHAFTLICHE SAMMELHANDSCHRIFT — Elsass, 1438-1440, folio 72r
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"Hie vohet an daz Register des Buches von der heimelichkeit und bluomen aller ertznie und von dem fúnfften wesen"

English translation:
“Here begins the register of the book about the secrets and flowers of all medicines and about the fifth element.”

It's a bit of a pity that Diebold Lauber didn't illustrate this part of the manuscript.

What do you think was meant by “flowers”?  Herbs? Or words of wisdom?