Phil Savoie / Liberty cap mushrooms, also known as Magic mushrooms, (Psilocybe semilanceata) from sheep pasture. Monmouthshire, Wales, UK, September.

Phil Savoie / Liberty cap toadstools, also known as Magic mushrooms (Psilocybe semilanceata) held in hand, gathered from sheep pasture, Monmouthshire, Wales, UK, September.

Gary K. Smith / Opium poppy (Papaver somniferum) seed heads, England, UK, June.

Gary K. Smith / Opium poppy (Papaver somniferum) dried seedheads.

Gary K. Smith / Opium poppy (Papaver somniferum) dried seedheads.

Gary K. Smith / Opium poppy (Papaver somniferum) dried seedheads.

Paul D Stewart / Portrait of the Ulisse Aldrovandi (1522-1605) Italian scientist, in particular a naturalist and physician. He taught in Bologna and his work 'Antidotarii Bononiensis Epitome' (1574) described the prop...

Jeff Rotman / Rolled marijuana / cannabis joints, in cannabis dispensary, Denver, Colorado, USA, June 2015. Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for medical and retail...

Jeff Rotman / Rolled marijuana / cannabis joints, in cannabis dispensary, Denver, Colorado, USA, June 2015. Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for medical and retail...

Jeff Rotman / Man and woman with Cannabis plant in organic Marijuana farm, Pueblo, Colorado, USA, June 2015. . Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for medical and reta...

Jeff Rotman / Man tending Cannabis plants in organic Marijuana farm, Pueblo, Colorado, USA, June 2015. Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for medical and retail purpo...

Jeff Rotman / Cannabis / Marijuana buds drying at a commercial in organic Marijuana farm, Pueblo, Colorado, USA, June 2015. Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for med...