Agaricus Procerus
Allen, The Encyclopedia of Pure Materia Medica, 1874, Vol. I, p. 127
A. procerus. Scop. (Parasol mushroom.) Found in England, common in pasture (also in Pennsylvania). Stem, 8-12 inches high. Esculent.
Atdhority. Poisoning cases.
Furious delirium, with frantic cries and vehement resistance to remedies, followed by a state like delirium tremens. — Insensibility.— Giddiness and staggering, as if intoxicated. — Pupils contracted ; dilating as sensibility returns. — Occasional convulsive spasms. — Debility. — Drowsiness.