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Pedunculate Oak

Pedunculate Oak in early May
Male catkins 
Male flowers on catkins
Close-up of a male flower - stamens
Female flowers at the end of a twig, in the axils of leaves
Close-up of female flowers - 3 fleshy stigmas
Side view of single female flower - thick style
Female flowers become dark red after a few days
Extending flower stem - the peduncle
Developing acorns on a peduncle - remains of stigmas
Acorns on long peduncles
Leaf - no stalk, lobed, recurved lower lobes
Trunk of old tree
Close-up of fissured bark with lichens
Knopper gall on developing acorn
Galls on male catkins
Oak apples
Marble galls