Many thanks for your answer.
My oldest record for Vancouver Island is from 1921, but the species was
observed only in southern part of island and predominantly in disturbed
habitats. Epipactis is also spreading in lower Fraser valley and in
neighbouring parts of Washington state.
Wojciech
Thanks for your answer.
I know history outline of helleborine. A the moment I have data from 31 USA
states and 7 Canadian provinces. In Wisconsin helleborine is treated as
invasive; it is common especially in New York, Great Lakes region and parts of
New England.
Regards Wojciech
I am botanist interested in history of helleborine orchid in America.
I am reconstructing expansion of the species on county/district level.
In last month I have got some very interesting data from amateurs, so I am
trying to ask another group of people for help.
I am especially
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