"Nick" wrote in message
...
They look like acorns to me, but with an alien growth.

http://i377.photobucket.com/albums/o...g/IMG_9787.jpg

http://i377.photobucket.com/albums/o...g/IMG_9788.jpg

I found these on a vehicle that visited our premises today.
Apologies for file sizes. New camera and I haven't a clue how to use it.
Yet.

Many thanks

Nick.

'Knopper' galls - probably Andricus quercuscalicis. They are caused by a
minute wasp that lays its eggs in the developing bud.
R.