Columbia Encyclopedia

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gum tree

(Encyclopedia)gum tree, name for the eucalyptus (see myrtle) in Australia and for several other trees, e.g., the sweet gum, of the family Hamamelidaceae (witch hazel family), and the black gum or tupelo in North Am...

sun dance

(Encyclopedia)sun dance, ceremony typical of the Plains Indians of North America. The ceremony was performed in the summer and lasted from two to eight days. Some of the ceremony was secret. Smoking, fasting, and o...

sagebrush

(Encyclopedia)sagebrush, name for several species of Artemisia, deciduous shrubs of the family Asteraceae (aster family), particularly abundant in arid regions of W North America. The common sagebrush (A. tridentat...

side-necked turtle

(Encyclopedia)side-necked turtle, name for the long-necked turtle of the families Chelidae and Pelomedusidae, found only in the Southern Hemisphere. The neck in these two families is of a different structure from t...

Vinland

(Encyclopedia)Vinland or Wineland, section of North America discovered by Leif Ericsson in the 11th cent. The sources for the knowledge of Leif Ericsson's exploration differ as to whether it was planned or accident...

maple

(Encyclopedia)maple, common name for the genus Acer of the Aceraceae, a family of deciduous trees and shrubs of the Northern Hemisphere, found mainly in temperate regions and on tropical mountain slopes. Acer, the ...

Pliocene epoch

(Encyclopedia)Pliocene epoch plīˈəsēn [key], fifth epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), from 5.1 to 2 million years ago. By the beginning of the P...

Columbia Plateau

(Encyclopedia)Columbia Plateau, physiographic region of North America, c.100,000 sq mi (259,000 sq km), NW United States, between the Rocky Mts. and the Cascade Range in Washington, Oregon, and Idaho. Most of the p...

Congaree National Park

(Encyclopedia)Congaree National Park, 21,888 acres (8,862 hectares), central S.C., est. as Congaree Swamp National Monument 1976, designated a national park and renamed 2003. Located along the north bank of the mea...

creeper

(Encyclopedia)creeper, common name for members of a family of small, inconspicuous birds related to wrens and nuthatches. They are found in wooded regions of the temperate Northern Hemisphere. A creeper spirals up ...