- 18 specimens collected from at least 2 countries
- 17 specimens identified from at least 2 countries
- 5 specimens used in 8 works
Progress
Collected From
- United States 11
- Canada 6
Identified From
- United States 10
- Canada 6
Dates Collected
- 1900 – 1905 6
- 1905 – 1910 1
- 1930 – 1935 1
- 1965 – 1970 1
- 1970 – 1975 6
- 1975 – 1980 2