North America, eastern colorants

Toward the Classification of Colorants in Archaeological Textiles of Eastern North America... 

Archaeological textiles from eastern North America colorant classification, 15-43 colorant testing protocol, 29-39 coloration, literature review, 16-17... 

There are about 50 species of orchids in the genus Orchis. These plants have large, showy flowers that are white or white-and-pink in color. North American species include the showy orchis (Orchis spectabilis), which occurs in rich woods in eastern North America, while the round-leaved orchis (O. rotunSfolia) occurs in the west. 

Oysters may be one of the best-known bivalves along the coast. An oyster cements one valve to a rock or other solid substrate and spends its entire life in that place. Oyster shells are heavy rough, and variable in shape. Unlike most other bivalves, the oyster lacks a foot and siphons, so must open its shell to circulate water over its gills. The common oyster (Crassostrea vir-ginica), like those seen in the lower color insert on page C-4, is found along much of the eastern coast of North America. 

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