Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 99.
The Prefecture of Luleå [1], 22/06/1732, ¶476:
Plenty of ‘Chamaecyparissus’ [clubmoss] grows here and they dye wool with it.1 They boil it together with birch leaves collected around midsummer and use it to dye coarse woollen cloth.