Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 79.

Lycksele Lappmark, 04/06/1732, ¶359:

It is noteworthy that ‘Tormentilla’ [Tormentil] always grew in boggy ground here. The people chew its roots together with the inner bark of alder and then rub the spittle into hides; this makes the red dye with which their harness, straps, belts, gloves etc. are coloured.