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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.〔Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2〕 They are cyanolichens, with the cyanobacterium photobiont being from the ''Anacystis'' genus.〔 They are umbillicate 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 ''Scytonema'' genus, and the latter two genera have green algae as the photobiont, and .〔
The genus is in the Peltulaceae family.
==Species==
* ''Peltula africana''
* ''Peltula auriculata''
* ''Peltula bolanderi''
* ''Peltula clavata''
* ''Peltula congregata''
* ''Peltula coriacea''
* ''Peltula corticola''
* ''Peltula cylindrica''
* ''Peltula euploca''
* ''Peltula farinosa''
* ''Peltula imbricata''
* ''Peltula impressa''
* ''Peltula langei''
* ''Peltula michoacanensis''
* ''Peltula obscurans''
* ''Peltula omphaliza''
* ''Peltula patellata''
* ''Peltula placodizans''
* ''Peltula psammophila''
* ''Peltula radicata''
* ''Peltula richardsii''
* ''Peltula rodriguesii''
* ''Peltula sonorensis''
* ''Peltula tortuosa''
* ''Peltula zahlbruckneri''
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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