I purchased this mushroom kit from Fungi Perfecti. This is the third flush from this block.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/48016763@N00">frankenstoen</a> from Portland, Oregon
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/48016763@N00/2425269323/">Shiitake mushroom block</a>