Lichen arcticus Linnaeus, Species Plantarum 2: 1148. 1753.

"Habitat in Suecia boreali, sub juniperis. terrestris." RCN: 8216.

Lectotype (Howe in Bull. Torrey Bot. Club 39: 201. 1912; Jørgensen & al. in Bot. J. Linn. Soc. 115: 275, f. 6. 1994): Herb. Linn. No. 1273.183, lowermost specimen (LINN) .

Current name: Nephroma arcticum (L.) Torss. ( Nephromataceae).

Note: See review by Jørgensen & al. (in Bot. J. Linn. Soc. 115: 275, 372, f. 6. 1994), who restrict Howe’s original choice to the lowermost specimen on the sheet.