European Mycology

with a yellowish margin and underside. Syn. fung. p. 487. Fries syst. p. 333. Martius Flor. Crypt. Erlang. p. 422. (good description). Agaricus hirsutus. Schaeff. t. 76. Agaricus boletiformis. Sowerb. Fung. 3. t. 418.

α. cinnamomea, with an obsoletely zoned, uniformly spadiceous pileus, and simply branched, cinnamon-shining lamellae.

β. with an entire, orbicular pileus, attached underneath at the center. Vaill. Bot. Paris p. 3. t. 1. f. 1. and 2. (regarding the form).

δ. undulata. Ag. undulatus, resupinate lying flat against the substrate, banded below and red, lamellate above, with the lamellae and margin undulated. Hoffm. Vegetab. in Hercyniae subteran. collecta. p. 7. t. 4.

Specimens growing in the open air, on pine and fir wood, are frequently found in the Harz Mountains. The younger ones are more rust-colored and marked by impressed bands or zones, while the old ones are dark brown, especially at the base, and yellowish or fawn-colored underneath.

Regarding the subterranean variety δ, the late Hoffmann, in the place cited, offered the following: It inhabits semi-putrid wood and pine beams of the mines of the Harz, often at a depth of 100 feet. It generally forms clusters of many interconnected and superimposed pilei, so that they seem to arise from a common root, being two inches or a palm's breadth in width, and very unequal in form and position. Notable is that proliferative variety where one pileus acquires the form of a funnel from the margin of another, as if from a peculiar stalk, with the lamellae decurrent extending down the stalk on the outside.