an open, self-made herbarium with gray pages. blossoms from different trees lie in the open book

herbarium book conservation page paper grey background space spring beginning hazelnut blossom birch nature yellow branch plant tree allergy pollen bloom hazel shrub twig detail flower closeup bud young early long bush beauty springtime brown macro flora season pollination catkin brush growing botanical seed first growth awake corylus avellana fresh nut open self-made gray pages blossoms from different trees lie pages germany