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• Here, with appropriate local subdivision, are entered works on the discipline of ethnology, and works on the origin, distribution, and characteristics of the elements of the population of a particular region or country. Theoretical works on the concept of groups of people who are bound together by common ties of ancestry and culture are entered under [Ethnic groups.] Works on the subjective sense of belonging to an individual ethnic group are entered under [Ethnicity.] General works on racial, religious, ethnic, or other minority groups are entered under [Minorities.]

Use for: Ethnic identities, Peoples (Ethnic groups)

• Here are entered theoretical works on the concept of groups of people who are bound together by common ties of ancestry and culture. Works on the subjective sense of belonging to an individual ethnic group are entered under [Ethnicity.] Works on the discipline of ethnology, and works on the origin, distribution, and characteristics of the elements of the population of a particular region or country are entered under [Ethnology,] with appropriate local subdivision. General works on racial, religious, ethnic, or other minority groups are entered under [Minorities.]

• A genus of flowering plants in the family Boraginaceae.

• A family of flowering plants, commonly known as the heath or heather family. Ericaceae is made up mostly of shrubs and small trees, and its members are widely distributed, extending into the subarctic and along mountain chains through the tropics.

• The Elgin Botanic Garden, established in 1801 in New York City by Dr. David Hosack (1769–1835), was a systematic arrangement of plants for scientific and pedagogical purposes. It served as a garden for teaching botany and materia medica at both the medical school of Columbia College and the College of Physicians and Surgeons. It was located in the area that is now midtown Manhattan.

• Natural dyes. Colours extracted from plants.

Use for: Elm blight

• A widespread fungoid killer of elms (Ulmus species) and certain other trees, first described in the Netherlands. Spread by bark beetles, the disease has decimated elm populations throughout much of Europe and North America.

• The yam family. Plants are herbaceous or woody vines and shrubs, distributed throughout tropical and warm temperate regions. Members of the family have thick, sometimes woody roots or tuber-like underground stems and net-veined, often heart-shaped leaves that sometimes are lobed. The small green or white flowers of most species are borne in clusters in the leaf axils. The fruit is a winged capsule or a berry.