Excerpt from Student's Hand-Book of Mushrooms of America: Edible and Poisonous Hymenium more or less permanently concealed, consisting in most cases of closely packed cells of which the fertile ones (the basidia) bear naked spores on distinct spicules, exposed only by the rupture or decay of the investing coat or peridium. Berkeley's Outlines. This family has been subjected to numerous revisions since the days of Fries, when its structural...