Lichen polyrhizos Linnaeus, Species Plantarum 2: 1151. 1753.

"Habitat in Arvoniae, Sveciae rupibus apricis elatis. rupestris." RCN: 8229.

Lectotype ( Jørgensen & al. in Bot. J. Linn. Soc. 115: 340, 379. 1994): [icon] " Lichenoides pullum superne & glabrum, inferne nigrum & cirrosum" in Dillenius, Hist. Musc.: 226, t. 30, f. 130. 1741. - Epitype ( Jørgensen & al. in Bot. J. Linn. Soc. 115: 340, 379. 1994): Herb. Dillenius Tab. XXX, No. 129, largest specimen (OXF) .

Current name: Umbilicaria polyrhiza (L.) Fr. (Umbiliculariaceae).