You said it did it by sheathing the nerves themselves with an impenetrable coating.
"The World with a Thousand Moons"
Edmond Hamilton
The lower part of the stem is sometimes covered at maturity with the sheathing portion of the veil, the upper part only appearing as a ring.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
"It may be as you say," he answered me at last, sheathing his dagger, "and at least you have my word that I will not slay you without first assuring myself that you have lied.
"The Shame of Motley"
Raphael Sabatini