|This edible cycad is from Mexico, where it is
known as chamal. It is reputed to have psychoactive
or even hallucinogenic effects (Schultes and
Farnsworth 1982, 187*; Schultes and Hofmann
1980,367*). This assumption is apparently due to
the fact that in Mexico the plant is also known as
hierba loca, "crazy herb" or "crazy-making herb:'
and is said to cause animals to act strangely (Reko
1938, 185*). No other details suggesting any actual
psychoactivity are known (Aguilar Contreras and
Zolla 1982, 91*). The large seeds yield a good
starch flour (Bartels 1993, 59*). In Mexican folk
medicine, the seeds are utilized to treat neuralgia
(Martinez 1994, 409*). The plant contains the
biflavones amentoflavone (main component),
bilobetin, sesquioflavone, ginkgetin, sciadopitysin,
7,4',7",4" -tetra-0-methylamentoflavone, and diooflavone(Dossaji et al. 1973,372).
Dossaji, S. F., E. A. Bell, and J. W. Wallace. 1973.Biflavones of Dioon. Phytochemistry 12:371-73.