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Phaeographis
Family: Graphidaceae
Phaeographis image
Gary Perlmutter
  • Greater Sonoran Desert
  • Resources
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Life habit: lichenized Thallus: crustose, continuous or ±rimose surface: quite variable, white, pale gray to cream-colored and dull or yellowish ochre to olive-green, ±waxy, uneven to slightly rugose, sometimes cracked, without soralia and isidia cortex: usually present, composed of ±periclinal hyphae medulla: white, often with crystals photobiont: primary one a Trentepohlia green alga, secondary one absent Ascomata: apothecial, lirellate, often flexuous and branched, rarely round, sometimes in stroma-like, elevated, white thallus areas (not in Sonoran species) disc: ±open, pale brown to dark gray (red only in P. haematites) and often with white pruina margin: usually with inconspicuous, narrow, dark brown, entire excipular lips and often indistinct thalline margin, rarely margin prominent or crenate exciple: mostly not carbonized, poorly developed or consisting of a narrow layer of brown to slightly carbonized hyphae; excipular lips: often poorly developed, sometimes thickened and carbonized hymenium: often inspersed, I- or I+ weakly blue or red, 50-150 µm tall paraphyses: parallel, rarely anastomosing; tips: often pale brown, chandelier-like branched asci: I-, apex thickened with ±distinct ocular chamber ("Graphis-type"), 1-8-spored (mostly 8-spored) ascospores: brown (soot-brown), transversely septate, submuriform or muriform, 15-150 x 5-50 µm, with slightly thickened spore-walls, I+ reddish brown, rarely wine-red or red-violet Conidiomata and conidia: not seen Secondary metabolites: either none detected or commonly ß-orcinol depsidones or lichexanthone or the red pigment isohypocrellin Geography: predominately tropical to subtropical with few species extending to temperate regions Substrate: mostly bark, rarely other substrates (rock, detritus or mosses). Note: Phaeographis is characterized by divergent, mostly poorly developed and rarely carbonized exciples, open brownish-gray to dark brown discs, often with a white pruina and brown ascospores that turn I+ red or red-brown. For the synonyms at the generic level see Staiger (2002), Phaeographis: from the Sonoran region
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Phaeographis adspersa
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Phaeographis aequabilis
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Phaeographis afzelii
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Phaeographis aggregata
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Phaeographis alata
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Phaeographis alba
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Phaeographis albolabiata
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Phaeographis alcicornis
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Phaeographis amazonica
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Phaeographis angulosa
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Phaeographis apex
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Phaeographis arechavaletae
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Phaeographis arthonioides
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Phaeographis articulata
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Phaeographis asterella
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Phaeographis asteriformis
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Phaeographis asteroides
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Phaeographis atromaculata
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Phaeographis attenuata
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Phaeographis aulaxerpeta
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Phaeographis australiensis
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Phaeographis balansana
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Phaeographis benguetensis
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Phaeographis bicolor
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Phaeographis brasiliensis
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Phaeographis caesiodisca
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Phaeographis caesiohians
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Phaeographis caesioradians
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Phaeographis campetes
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Phaeographis cascarillae
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Phaeographis celebensis
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Phaeographis ceratoides
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Phaeographis cerviculata
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Phaeographis ceylonensis
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Phaeographis chionodisca
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Phaeographis chondrina
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Phaeographis cinerascens
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Phaeographis circumscripta
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Phaeographis cohibens
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Phaeographis colligata
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Phaeographis computata
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Phaeographis concava
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Phaeographis concinna
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Phaeographis conjungens
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Phaeographis convariata
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Phaeographis crassa
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Phaeographis crassilabra
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Phaeographis crenulata
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Phaeographis cryptica
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Phaeographis decipiens
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This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394
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