Those are not gills - those are ridges. Gills are different in quality from the cap of the mushroom - you can see a dividing line if you cut across them - they tear off fairly easily - they are thin - they stop at a more defined line at the stalk.
A Jack o' lantern mushroom has gills.
http://students.cis.uab.edu/Kitta/poisonous.html
29 posted on 03/18/2013 6:37:17 AM PDT by heartwood
