4 April 2019 UPDATE:
These are unmistakably Hericium erinaceus that were grown from a commercial liquid culture misidentified as Hericium abietis. There is no question about that identification; especially as they have begun putting on teeth and slicing one opened revealed a solid interior. At least now I know why I’ve been puzzling over their appearance looking so stubbornly underdeveloped!
For sake of comparison, the first image below is of a correctly identified Hericium abietis photographed at the Mount Pisgah Mushroom Festival at Eugene, Oregon.
The following show what was grown from a commercial culture that was purchased earlier this year. The amazing part is that these mushrooms grew so well on a mixture of douglas-fir, white pine and spruce!
That mushroom was delicious in dinner last night. Both the taste and the texture were excellent.