European Mycology

in gardens and forests. It differs from the preceding species by its thinner substance, a pileus that is not lacunose-wrinkled, scarcely banded, unicolored, and nearly smooth. The lamellae are simply branched and gray-pruinose covered with a fine, powdery bloom. It varies in size and color according to its location.

22. betulina, with a leathery, tomentose, zoned, versicolor pileus, usually pale, with whitish or pale, simply branched or sinuous lamellae.

Agaricus betulinus. Linn. Sowerb. t. 182.
Daedalea Fries. l. c. Flor. Dan. t. 1555.
Agaricus coriaceus. Bull. Hist. des champ. p. 373. t. 537. figg. 13. c. 8. F. G. K. and M.? (excluding several synonyms). Syn. fung. p. 486. Bolton t. 158.

Cellularia cyathiformis. Bull. t. 414. (from the author himself).

β. Ag. versicolor, with a leathery, villous covered with long, soft hairs, brown pileus, banded in gray and diluted green and grayish, with obtuse, straight lamellae. Bergamaschi in Biblioth. Italiana. Octob. 1823. p. 73. Another versicolor variety is at Planer and Syn. l. c.

It is a common species on felled trunks in forests, and here and there on beams in greenhouses. It is usually two inches in size, but can be found a palm's breadth wide; in that case, the substance is more flexible and the lamellae are simple. In a few individuals, especially young ones, these are labyrinthiform (cf. Sow. tab. cit. right figure). The color, depending on the position of the fungus and its age,