In 1997 the Museo Nazionale della Montagna of the Club Alpino Italiano produced a documentary film in Italian on Clarence Bicknell's friend, the Swiss botanist Emile Burnat entitled Il sentiero delle orchidee - Emile Burnat in Valle Pesio. You can now view the film at https://www.youtube.com/watch?v=cW9txVhLtx4
The film opens with Burnat at the age of 80 reminiscing about his botanical exploits in the mountains, and continues with a series of flashbacks to episodes of his life. Burnat says he has never found the rare orchid Cypripedium calceolus, which is seen in close-up at the beginning and end of the film. Burnat laments that it is ‘a flower found only by Bicknell, about which I dream’. It was in 1899 that Clarence Bicknell found the plant in Val di Pesio, and wrote to Burnat about it. Then in 1912 Burnat found it himself near Certosa di Pesio. Later it was considered extinct in Val di Pesio until finally it was rediscovered in 1992, thanks to Bicknell’s letter to Burnat describing where he found it.
Read the comments of Graham Avery, whom we thank for his contribution, and a summary of the film at Emile Burnat - the Film