Illegal mate! Illegal!
Well, I do not reside in the US so I do not know what the "street" situation looks like, but this is what the US Federal Law stipulates:
Code of Federal Regulations
Title 21, Volume 9
Revised as of April 1, 2003
From the U.S. Government Printing Office via GPO Access
CITE: 21CFR1308.11
TITLE 21--FOOD AND DRUGS
CHAPTER II--FOOD AND DRUG ADMINISTRATION
DEPARTMENT OF HEALTH AND HUMAN SERVICES
PART 1308--SCHEDULES OF CONTROLLED SUBSTANCES
Sec. 1308.11 Schedule I.
(a) Schedule I shall consist of the drugs and other substances, by
whatever official name, common or usual name, chemical name, or brand
name designated, listed in this section. Each drug or substance has been
assigned the DEA Controlled Substances Code Number set forth opposite
it.
(d) Hallucinogenic substances. Unless specifically excepted or
unless listed in another schedule, any material, compound, mixture, or
preparation, which contains any quantity of the following hallucinogenic
substances, or which contains any of its salts, isomers, and salts of
isomers whenever the existence of such salts, isomers, and salts of
isomers is possible within the specific chemical designation (for
purposes of this paragraph only, the term ``isomer`` includes the
optical, position and geometric isomers):
Substance........................................................ CODE
(25) Psilocybin.................................................. 7437
(26) Psilocyn..................................................... 7438
And according to US drug equivalency tables:
1 gm of Mushrooms containing Psilocin and/or Psilocybin (Dry) = 1 gm of marihuana
1 gm of Mushrooms containing Psilocin and/or Psilocybin (Wet) = 0.1 gm of marihuana
= WHAT A BUMMER!!