These little mushrooms have come up in an indoor pot with a plant growing in
it. They don't match anything in Roger Phillips' book, or any of my other
mushroom books, and don't look like any I've seen before. As you can see,
an urn-like stem, with a little pointy cap. So far they're only about 1cm
high at most.

http://www.flickr.com/photos/12519030@N02/5205411688/

http://www.flickr.com/photos/12519030@N02/5205411572/

Any advice welcome. And if nobody knows, can anyone point me to a website
that might do identification?

Thanks from someone