plant material
plant substance

It was all animal tissue and plant substances, and she suspected it was affecting her system.

Marijuana (as well as a variety of other plant substances) becomes purple with the addition of the Duquenois reagent and hydrochloric acid.

Beta-sitosterol is a plant substance similar to cholesterol.

With heroin, rejection sets in, the plant substances or chemicals are expelled, and it's kind of like an engine suddenly losing its oil.

Using plants and plant substances to treat all kinds of diseases and medical conditions is believed to date back to prehistoric medicine.

Still another plant substance, extracted from the fruit of the Garcinia cambogia tree, from Indonesia, is said to help people lose weight.

Organic matter is decayed material from plant substances that is added to the soil to increase its water-holding capacity and its tilth.

Springer, G. F. Relation of blood group active plant substances to human blood groups.

I was having waking nightmares, though ingestion of hallucinogenic plant substances had nothing to do with it.

For his discoveries and work developing natural plant substances, Dr. Brekhman held nearly 40 patents, including 21 international patents.