"Sacha" wrote in message
. uk...
While at Marwood Hill today, we saw a small tree with unbelievably
horrible
thorns! All I remember of the name (I had nothing to write on) was that
it
ended in Americana. The thorns were shaped like hooked rose thorns but a
great deal larger and were all up the trunk and along every branch and
twig.
I've never seen such a brute but I should think it's a security firm's
dream
plant. Does anyone know what it might be?


Agave americana has thorns but it's not a tree.