Ethnobotany in the context of "Indigenous knowledge"

Hoodoo is a set of spiritual observances, traditions, and beliefs—including magical and other ritual practices—developed by enslaved African Americans in the Southern United States from various traditional African spiritualities and elements of indigenous North American botanical knowledge. Practitioners of Hoodoo are called rootworkers, conjure doctors, conjure men or conjure women, and root doctors. Regional synonyms for Hoodoo include roots, rootwork and conjure. As an autonomous spiritual system, it has often been syncretized with beliefs from religions such as Islam, Protestantism, Catholicism, and Spiritualism.

Hoodoo, frequently associated with conjure, is a compilation of religious beliefs and practices, centered on ancestor worship, justice, and rootwork, a botanical practice used for both healing and causing harm. It is mostly influenced by West African spiritual practices, incorporating Indigenous herbalism and European grimoires. While there are a few academics who believe that Hoodoo is an autonomous religion, those who practice the tradition maintain that it is a set of spiritual traditions that are practiced in conjunction with a religion or spiritual belief system, such as a traditional African spirituality and Abrahamic religion.

Human uses of plants include both practical uses, such as for food, clothing, and medicine, and symbolic uses, such as in art, mythology and literature. Materials derived from plants are collectively called plant products.

Edible plants have long been a source of nutrition for humans, and the reliable provision of food through agriculture and horticulture is the basis of civilization since the Neolithic Revolution. Medicinal herbs were and still remain to be the key ingredients of many traditional medicine practices, as well as being raw materials for some modern pharmaceuticals. The study of plant uses by native peoples is ethnobotany, while economic botany focuses on modern cultivated plants. Plants are also used as feedstock for many industrial products including timber, paper and textiles, as well as a wide range of chemicals.

Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including defense and protection against insects, fungi, diseases, against parasites and herbivorous mammals.

The earliest historical records of herbs are found from the Sumerian civilization, where hundreds of medicinal plants including opium are listed on clay tablets, c. 3000 BC. The Ebers Papyrus from ancient Egypt, c. 1550 BC, describes over 850 plant medicines. The Greek physician Dioscorides, who worked in the Roman army, documented over 1000 recipes for medicines using over 600 medicinal plants in De materia medica, c. 60 AD; this formed the basis of pharmacopoeias for some 1500 years. Drug research sometimes makes use of ethnobotany to search for pharmacologically active substances, and this approach has yielded hundreds of useful compounds. These include the common drugs aspirin, digoxin, quinine, and opium. The compounds found in plants are diverse, with most in four biochemical classes: alkaloids, glycosides, polyphenols, and terpenes. Few of these are scientifically confirmed as medicines or used in conventional medicine.

Ethnomycology is the study of the historical uses and sociological impact of fungi and can be considered a subfield of ethnobotany or ethnobiology. Although in theory the term includes fungi used for such purposes as tinder, medicine (medicinal mushrooms) and food (including yeast), it is often used in the context of the study of psychoactive mushrooms such as psilocybin mushrooms, the Amanita muscaria mushroom, and the ergot fungus.

American banker Robert Gordon Wasson pioneered interest in this field of study in the late 1950s, when he and his wife became the first Westerners on record allowed to participate in a mushroom velada, held by the Mazatec curandera María Sabina. The biologist Richard Evans Schultes is also considered an ethnomycological pioneer. Later researchers in the field include Albert Hofmann, Ralph Metzner, Carl Ruck, Blaise Daniel Staples, Giorgio Samorini, Keewaydinoquay Peschel, John W. Allen, Jonathan Ott, Paul Stamets, and Juan Camilo Rodríguez Martínez.