Peltula

Peltula is a genus of small dark brown to olive or dark gray squamulose lichens that can be saxicolous (grow on rock)) or terricolous (grow on soil). Members of the genus are commonly called rock-olive lichens. They are cyanolichens, with the cyanobacterium photobiont from the genus Anacystis. They are umbilicate with flat to erect squamule lobes that attach from a central holdfast or cluster of rhizenes. Lichen spot tests are usually negative.

The thallus of members of the genus are similar to members of Heppia, Psora, and Placidium, although the first genus has cyanobacteria from the genus Scytonema, and the latter two genera have green algae as the photobiont.

The genus is in the family Peltulaceae.

Species

 * Peltula auriculata Büdel, M.Schultz & A.Gröger (2000)
 * Peltula bolanderi (Tuck.) Wetmore (1971)
 * Peltula brasiliensis (Zahlbr.) Büdel, Kauff & Bachran (2018)
 * Peltula capensis (Brusse) Büdel (1987)
 * Peltula cataractae (Büdel & Sérus.) Büdel, Kauff & Bachran (2018)
 * Peltula clavata (Kremp.) Wetmore (1971)
 * Peltula cylindrica Wetmore (1971)
 * Peltula daurica T.V.Makryi (2017)
 * Peltula euploca (Ach.) Poelt ex Pišút (1967)
 * Peltula hassei (Zahlbr.) Büdel, Kauff & Bachran (2018)
 * Peltula imbricata Filson (1988)
 * Peltula impressa (Vain.) Swinscow & Krog (1979)
 * Peltula inversa Büdel & M.Schultz (2003)
 * Peltula leptophylla (Vain.) Büdel & M. Schultz (2018)
 * Peltula lobata J.Marques, M.Schultz & Paz-Berm. (2013) – Europe
 * Peltula lobulata Q.X.Yang & X.L.Wei (2022) – China
 * Peltula obscurans (Nyl.) Gyeln. (1935)
 * Peltula obscuratula (Nyl.) Poelt ex Egea (1989)
 * Peltula olifera (H.Magn.) J.C.Wei (1991)
 * Peltula omphaliza (Nyl. ex Eckfeldt) Wetmore (1971)
 * Peltula patellata (Bagl.) Swinscow & Krog (1979)
 * Peltula placodizans (Zahlbr.) Wetmore (1971)
 * Peltula polycarpa Q.X.Yang & X.L.Wei (2022) – China
 * Peltula polyphylla Q.X.Yang & X.L.Wei (2022) – China
 * Peltula pseudoboletiformis Q.X.Yang & X.L.Wei (2022) – China
 * Peltula radicata Nyl. (1853)
 * Peltula rodriguesii (Cromb.) Büdel (1989)
 * Peltula steppae (Kalb) Büdel, Kauff & Bachran (2018)
 * Peltula submarginata Q.X.Yang & X.L.Wei (2022) – China
 * Peltula zahlbruckneri (Hasse) Wetmore (1971)