Xanthoconium purpureum
Bill Y identified it last year.  This year I noticed how similar the stalk texture is to Xanthoconium separans.
It is attacked by a similar if not identical white worms that bore through the stem into the cap.  You got to get these young if you want to beat the worms :o)

Arrived about a week later then last year.  It was everywhere at the Grafton site.  It's edibility is rated as "unknown".  I got enough today to do a taste test.  Will let you know later.

Fresh young Siamese twins.

Here is an older specimen.