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Classification Key for the Genus Datura
Dr. Richard Sanders and Erowid.org
Datura stramonium

Plants are green, flowers white.

Fruit spiny (or both smooth
and spiny fruit on one plant).
var. stramonium

All fruit spiny.
Form stramonium

Smooth and spiny fruit on same plant.
Form labilis

Fruit not spiny.
var. inermis

Plants with purple tinge,
flowers violet.

Fruit spiny. var. tatula

Purplish coloring of plant weakly pronounced.
Form tatula (or Datura tatula)

Purplish coloring of plant strongly pronounced.
Form bernhardii (or Datura bernhardii)

Fruit not spiny. var. godronii
Photo by Dr. Richard Sanders
Datura stramonium var. tatula

Datura stramonium var. tatula
form tatula
Datura stamonium var. tatula
form bernhardii



© 2002 Dr. Sanders & Erowid