by United States National Herbarium, United States National Museum

1916

by George Vasey, United States National Herbarium

1895

by United States national museum (Wash.). National herbarium

1890

by United States National Museum

1892

by United States National Museum

1921

by United States. Congress

1920

by United States. Forest Service

1927

by Marine Biological Association of the United Kingdom

1913

by United States National Museum

1891

by United States National Museum

1901

by United States. Department of Agriculture. Library

1907

by United States. Dept. of Agriculture. Library

1907