I’ve found a couple of small Velvet Pax (Paxillus atrotomentosus or Tapinella atrotomentosa) in the forest behind us, one on a mossy stump and one at the base of a dead tree (on which are also growing some varnished conk). I was surprised to find them so early, but apparently the June rains brought them out. They weren’t as large as those in the image here, but they were still unmistakeable, with the brown velvet on their stems and the purplish discoloration where the bugs or squirrels had nibbled at them.
Of course, I had to try the first little specimen (its cap was already cracking) in the dyepot, and here are the results. This is the mushroom that has been known to give a purple colour, but here the alum-mordanted sample (top) has a definite greenish cast, while the iron-mordanted sample below is a nice army-blanket green.
The second mushroom I found is currently sitting in the freezer; I’m wondering if that might make a difference to the colour.