Or they were attributed, as already intimated, to unseen personal agencies:
I quote this latter rather also to show the accuracy and compass of Shakespeare's vision. How many people, not farmers, have seen wheat whitened by the blight! And that is exactly the description, white not "to the harvest," but whiter still to sterility and death.
But leaving aside all microscopic forms which may or may not be incidentally touched upon everywhere, we may turn our attention next to cryptogamic plants which are positively defined. The sudden springing of mushrooms, for instance, especially at night, so unreal and yet realities withal, made their creation a suitable trick for Prospero:
"You demi-puppets that
By moonshine do the green sour ringlets make,
Whereof the ewe not bites, and you whose pastime
Is to make midnight mushrooms, that rejoice
To hear the solemn curfew."
The "green sour ringlets on the fields whereof the ewe not bites" are "fairy rings." The same thing appears in the speech of Dame Quickly;
"And nightly, meadow-fairies, look you sing,
Like to the Garter's compass, in a ring;
The expressure that it bears, green let it be.
More fertile-fresh than all the field to see."
Fungi, toadstools, mushrooms, and so forth, are fructifications only; the vegetative part of the plants permeates the soil, feeds on its organic matter, and spreads almost equally, we may assume, in all directions from the point of starting. When now this vegetative growth has accumulated energy to form fruit, the sporocarps or mushrooms rise all around at the limits of activity; hence, in a circle.
The fungi cut a small figure in Shakespeare—i.e., considering their numbers and almost omnipresence. But we must remember that they were at that time studied by few, their significance and interest little suspected. They formed part of the realm of the world unseen; they came and went at the instance of powers unknown, mostly personified, imaginary, a misty population, the thought of which kept for long ages the childhood of our race in terror. Shakespeare saw the forms of unstudied plants, everything visible to the naked eye, and really omitted very little. He speaks of mosses—the lichens were included with them—chiefly as indicative of age in the object in which they rest: