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

"Habitat in Europae Sylvis acerosis sterilibus sub juniperis. terrestris." RCN: 8215.

Lectotype (Howe in Bull. Torrey Bot. Club 39: 201. 1912): Herb. Linn. No. 1273.175 (LINN) .

Current name: Peltigera aphthosa (L.) Willd. ( Peltigeraceae).

Note: Specific epithet spelled “aphtosus” in the protologue. See extensive reviews by Jørgensen & al. (in Bot. J. Linn. Soc. 115: 273, f. 5. 1994), and by Vitikainen (in Acta Bot. Fenn. 152: 26. 1994).