Ernst Häyrén
Ernst Fredrik Häyrén; Häyrén
* March 17, 1878 – November 20, 1957 †
botanist
Finnish botanist (1878-1957)
- 1,480 specimens collected from at least 10 countries
- 301 specimens identified from at least 5 countries
- 203 specimens used in 48 works
Progress
Collected From
- Finland 1,202
- Estonia 61
- Sweden 53
- Norway 52
- Russian Federation 37
- Åland Islands 9
- Switzerland 5
- Romania 2
- United States 2
- Germany 1
Identified From
- Finland 194
- Estonia 36
- Russian Federation 25
- Norway 12
- Sweden 2
Dates Collected
- 1890 – 1895 2
- 1895 – 1900 141
- 1900 – 1905 127
- 1905 – 1910 96
- 1910 – 1915 151
- 1915 – 1920 152
- 1920 – 1925 77
- 1925 – 1930 83
- 1930 – 1935 86
- 1935 – 1940 210
- 1940 – 1945 17
- 1945 – 1950 79
- 1950 – 1955 218
- 1955 – 1960 11
- 1965 – 1970 1
Dates Identified
- 1895 – 1900 36
- 1900 – 1905 15
- 1905 – 1910 20
- 1910 – 1915 29
- 1915 – 1920 19
- 1920 – 1925 4
- 1925 – 1930 28
- 1930 – 1935 21
- 1935 – 1940 40
- 1945 – 1950 17
- 1950 – 1955 19