Eschscholzia californica, California Poppy.

Botanical name: 
Please read the introduction to Boericke's tinctures.

Experiments upon animals showed it to act more powerfully than morphine which is contained in the plant. It causes general weakness, torpor, accelerated respiration, complete paralysis of the limbs. Slowing of circulation. A soporific remedy which is harmless. Use the tincture.

Boericke's Materia Medica, 1901, was written by William Boericke. Excerpt: The Tinctures.