Ethnobotany is the study of the relationship between people and plants, specifically how people of a particular culture and region make use of indigenous (native) plants. Ethnobotanists strive to document the local customs involving the practical uses of local flora for many aspects of life, such as plants as medicines, foods, intoxicants, and clothing. The field of ethnobotany has grown from simply acquiring ethnobotanical knowledge to that of applying it to modern society, primarily in the form of pharmaceuticals. Ethnobotanical knowledge encompasses both wild and domesticated species, and is rooted in observation, relationship, needs, and traditional ways of knowing. Ethnobotany is an integrative, multi-disciplinary field of learning that draws on cultural knowledge and includes branches of investigation such as anthropology, ethnography, archaeology, comparative folklore, religious studies, medicine, chemistry, pharmacology, and more. Some of the psychoactive species and their lore carry us deep into realms of ritual, mythology, and cosmology. Field ethnobotany is the observation of the human-plant relationship in places where it is visible and may be either experienced and/or documented, in stories and images. Ethnobiology is the study of the relationships between people, the lifeforms surrounding them, and the environment in which they live, in the past or present, and ethnobotany is included within the greater category of ethnobiology.