- 16,206 specimens collected from at least 17 countries
- 68 specimens identified from at least 2 countries
- 4,422 specimens used in 172 works
Progress
Collected From
- United States 14,031
- Mexico 1,381
- Canada 634
- Egypt 66
- American Samoa 11
- Israel 5
- Guatemala 2
- Paraguay 2
- Kenya 2
- South Africa 1
- Jamaica 1
- Indonesia 1
- Japan 1
- India 1
- El Salvador 1
- Sudan 1
- Samoa 1
Identified From
- United States 62
- Mexico 6
Dates Collected
- 1815 – 1820 49
- 1875 – 1880 1
- 1890 – 1895 1
- 1895 – 1900 3
- 1900 – 1905 9
- 1905 – 1910 655
- 1910 – 1915 1,754
- 1915 – 1920 127
- 1920 – 1925 120
- 1925 – 1930 643
- 1930 – 1935 2,449
- 1935 – 1940 581
- 1940 – 1945 4,326
- 1945 – 1950 4,093
- 1950 – 1955 6
- 1955 – 1960 2
- 1960 – 1965 2
- 1970 – 1975 4
- 1980 – 1985 1
Dates Identified
- 1940 – 1945 17
- 1945 – 1950 6