any knowledgable fungi members on site
By Wisteria
Tyne & Wear,
United Kingdom 
Ilaid my lawn out about five years ago after rotivating deeply and removing all weed roots and debris. But this year at one end I noticed two or three clumps of white fungi. they have a dome shape varying in size from from about three centimetres to about five centimetres, quite solid and no visible stem. Sorry I lack the knowledge to attach a photo.
Thanks Sid but unlike a field mushroom this oone has no visible stem the dome shape seems to come strait from the soil, if you break one away there is still a white circle left in the ground. the fungi is a very definite white not creamy.Thanks Owdboggy but I have seen puffballs which have a soft shell and filled with orange or brown spores and they have a visible stem. These are a solid dome completely white throughout.
Wisteria
wisteria
8 Nov, 2008
Answers
Does it look like a golf ball? Then it could be a Puffball. There are small kinds as well as the ones which grow to the size of a sheep!
9 Nov, 2008
Oh right! Then Owdboggy may well be right. Although some agaric (gilled) fungi do start out life kinda egg-shaped before they open out. Maybe you'll get one the size of a sheep!!!??
9 Nov, 2008
If you have seen Puffballs as you describe then they were not what I recognise as Puffballs. The ones which grow in our garden(and which we eat) are round and white all the way through and if you do not pick them carefully they leave a piece behind. I have never bothered taking a picture of them though.
11 Nov, 2008
Do you eat them Owdboggy? I hear the young ones are very tasty sauted in butter :-)
11 Nov, 2008
Yes, when we get a big enough crop of the small ones, and if I get them when they are young. We have found the giant ones once or twice in our Wood, but they do not fruit very often here for some reason.
For anyone else though. MAKE SURE YOU ARE RIGHT!
13 Nov, 2008
Yes, indeed!
14 Nov, 2008
Hi Wisteria - there are many hundreds of species of fungi in the UK, some being very like others in appearance. Without a picture it really is impossible to idenify your fungus. Beware, if it looks to you like a field mushroom (whcih it sounds like) as there are poisenous species that look very similar - like the Yellow Deceiver. However, please don't destroy them as many species are becoming rare and if they dont offend you, they are very interesting and rather beautiful things to have :-)
9 Nov, 2008