- 490 specimens collected from at least 3 countries
- 1 specimen identified from at least 1 country
- 23 specimens used in 16 works
Progress
Collected From
- United States 421
- United Kingdom 67
- Canada 1
Identified From
Dates Collected
- 1910 – 1915 1
- 1915 – 1920 105
- 1920 – 1925 267
- 1925 – 1930 2
- 1930 – 1935 3
- 1935 – 1940 83
- 1945 – 1950 9
- 1950 – 1955 3