Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 77.

Lycksele Lappmark, 03/06/1732, ¶349:

On the return journey I saw that the foundation of the many tussocks found in bogs is the small plant ‘Juncellus, radice implicata’ [Deergrass] mentioned earlier. Its roots grow higher and higher above the ground each year, which is worthy of note. It is also the foundation of the famous floating islands.