What and When
Based on my experience of 3 years :o)
This list should grow and become more accurate in time.

Velvet Foot - around April 4
Dryad's Saddle - April 23 to
Morel - False and otherwise.  April 25 to May 31
Oysters - April 25 to June 5, the Aspen type
Veined Cup - May 15 to
Scaber Stalk - May 15 to October 31
Boletes - June 15 to
Chicken of the Woods - June15 to September 25
Boletus separans - July 1 to
Dotted-stalk Suillus - July 1 to
Lactarius volemus - July 1 to September 25
Veiled Oyster - July 3 to
Distant -  Gilled Lactarius - July 10 to September 25
Lactarius corrugis - July 15 to September 25
Lobsters - July 15 to September 25
Boletus bicolor - July 13 to September 25
King Bolete - August 1 to October 31
Black trumpet - August 1 to October 31
Golden Chanterelle - July 10 to September 31
Smooth Chanterelle - July 12 to September 31
Red Chanterelle - August 15 to October 31
Giant Puffballs - August 25 to September 30
Honey Mushroom - September 1 to October 31
Hen of the Woods - September 10 to October 31
Aborted Entoloma - September 15 to October 15
Hedgehog - September 15 to October 15
Blewit - September 15 to November 15
Slippery Jack - September 15 to November 15
Shaggy Mane - September 15 to October 15
Matsutake - September 15 to November 1
Late Fall Oysters - October 15 to November 15
Brick Tops - October 15 to November 15