I had a bunch of these last year but didn't have a camera. Some of them were up to about 10 inches across.
The undersides are more spongy looking than veined but that may change over time?
is the top slimy? I have some that look like that here with slimy caps I am told not to eat them and we have ones with non slimy caps I am told are a type of bolete and edible and very good but I only find ones with slimy caps so far. someone who knows more will probably post! I think it is a type of or related to bolete and don't eat it unless someone can give you a very positive idea preferably who sees it in person!
Location: west marin, bay area california. sandy loam, well drained, acidic soil and lots of shade
I would call that a bolete (boletus, suillus etc spp). A great shroom to have around if it's one of the edible ones. However you don't want to be guessing with mushrooms, mistakes can be fatal or extremely hazardous to health. There are toxic boletes. Below are some resources to help you get started on identifying edible vs poisonous, but it's not something you should do in a hurry (don't rush to be eating this crop for instance, unless you are sure of the ID). If you have someone locally who can positively ID them, that's better.
Thanks all ! Ya I would not eat any untill I was absolutely sure of it's edibility. I don't think it was slimmy, I will have to check on that.
One of the links had this to say : Suillus subaureus : Found primarily under quaking aspen and big-toothed aspen; cap margin with a roll of whitish material when young; stem with glandular dots by maturity, not reticulate.
I would use David Arora's Mushrooms Demystified, and use the key. I concur that it is probably a bolete. If you think you know what it is, you can look at Google Images, but always confirm with another source afterwards, like mushroom expert. com.
Ha! First thing that jumped to my mind was bolete as well. Glad to find out all those mushroom books I read a while back did something for me
"There is nothing, Sir, too little for so little a creature as man. It is by studying little things that we attain the great art of having as little misery and as much happiness as possible." - Samuel Johnson
the thing with boletes (thats definitely what you have there) is that they are so easy to identify because of that sponge under the cap.
while there are a few that are not considered edible, most of that genus are edible. and the ones which arent edible are more the- minor stomache distress causing non edible - rather than the crazy scary fatal types of non edibles.