"' Tyge Wittrock B�cher "'( 25 October 1909 15 March 1983 ) was a phytogeographer.
2.
During his time in Potsdam he came into contact with the phytogeographer Ludwig Diels, Director of the Botanical Museum and the Botanical Garden in Berlin-Dahlem.
3.
This species was first described and published in 1806 by Carl Ludwig von Willdenow, the early German phytogeographer in " " Species Plantarum " " " Editio Quarto " 4 : 782.
4.
"' Andrey Aleksandrovich Fedorov "'( ), born 1908 in Tver, died 5 March 1987 in Leningrad, was a Soviet Russian biologist, botanist, taxonomist and phytogeographer, who was from 1970 a corresponding member of the Academy of Sciences of the USSR . He was the brother of the botanist Alexander Fedorov ( 1906-1982 ).
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