A plant genus of the family Gnetaceae, order Gnetales class Gnetopsida, division GNETOPHYTA. Members contain STILBENES and benzylisoquinoline alkaloids.

A plant division of seed plants containing only a few members.

A plant genus of the family Cycadaceae, order Cycadales, class Cycadopsida, division CYCADOPHYTA of palm-like trees. It is a source of CYCASIN, the beta-D-glucoside of methylazoxymethanol.

A plant species in the PIPERACEAE plant family. It is a common spice on foods and is used medicinally to increase gastrointestinal assimilation of other supplements and drugs. Piperine is a key component. Black pepper is picked unripe and heaped for a few days to ferment. White Pepper is the ripe fruit dehulled by maceration in water.

Organic compounds that contain 1,2-diphenylethylene as a functional group.