Homeowner Forum / Lawn and Garden / July 2008

Hope this is a good enough description:

Green fleshy leaves,look a bit like cactus leaves, with regularly
spaced spikes along each edge.Leaves are about 3 feet long and radiate
to cover a diameter of about 3 feet. From centre of plant, three or
four thick stems with some smaller leaves (look same as main leaves)
and clusters of what I would describe as small teasle shaped 'flowers'
although they are light green in colour. Local bees do seem to like
them as they visit regularly.These clusters start about half way up
the stem and each stem is topped off with a clump of about 12
'flowers' of varying size.Curious to know what this is, anyone?