Our Edible Toadstools and Mushrooms and How to Distinguish Them / A Selection of Thirty Native Food Varieties Easily Recognizable by their Marked Individualities, with Simple Rules for the Identification of Poisonous Species

by W. Hamilton Gibson

EDIBLE TUBE MUSHROOM

Boletus edulis

A famous delicacy

The most prominent member of the Boleti is the typical species whose portrait I have given on Plate 20, "in vain calling himself 'edulis,' where there were none to believe him." But in spite of this remark of Dr. Badham, which had reference especially to his native country, England, this fungus had long been a favorite article of food among a large class of the more lowly Europeans, to say nothing of the luxurious epicures of the continent.

Boletus edulis is to be found singly or in groups, usually in the woods. Its average diameter is perhaps four or five inches, though specimens are occasionally found of double these dimensions. A letter to the writer from a correspondent in the Rocky Mountains describes specimens measuring fifteen inches in diameter having been found there.

Specific characters

The cushion-like cap is more or less convex, according to age, of a soft brownish or drab color somewhat resembling kid, and with velvety softness to the touch. The under surface or hymenium is thickly beset, honey-combed with minute vertical pores, which will leave a pretty account of themselves upon a piece of white paper laid beneath them and protected from the least draught, a process by which we may always obtain a deposit of the ochre-tinted spores, as is further described in a later chapter.

In Boletus edulis this pore surface is white in young specimens, later yellow, finally becoming bright olive-green; flesh white or creamy, unchangeable on fracture. Stem paler than cap, thick, swollen at base, often malformed and elongated, especially when from a cluster, generally more or less covered with vertical raised ridges, which become somewhat netted together and pinkish as they approach the cap. The taste is sweet, and in the very young specimen, which is brittle, quite suggestive of raw chestnut.

Insects and decay

Any Boletus answering this description may be eaten without fear, assuming, of course, that its substance is free from any taint of dissolution and traces of insect contamination. Both of these conditions are too apt to prevail in the mature specimens, and all Boleti are more safely employed for food in their young crisp stage, or at least before their full expansion. In their maturity, moreover, they often prove too mucilaginous in consistency to be pleasant to the average partaker, especially the novice.