Corylus avellana

This is the first image you see every year when the Hazel becomes first noticeable. Covered in the male yellow catkins, it is also responsible for the first opportunity to be exposed to lots of pollen.

And here, the little red flower, never usually even noticed by most people. This of course produces the Hazel Nut.

A green leaf which when young often has red/brown markings in the middle

The red-leaf variety called Corylus avellana ‘Maxima Purpurea’

‘Harry Lauder’s Walking Stick’ – Corylus avellana ‘Contorta’

And this is Corylus ‘Red Majestic’ – which is a purple leaf contorted hazel