Dictamnus, also called Fraxinella (Dictamnus albus)

Balthasar van der Ast (Middelburg 1593/94-1657 Delft) Dictamnus, also called Fraxinella (Dictamnus albus) signed with initials, the letters interlaced, inscribed 'Fractsinella' and with number '214' (on an added strip of paper at lower left) watercolour, watermark Basel Crozier 31.4 x 20.1 cm.