Consortium of
North American Lichen Herbaria
- building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities -
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Porina
Family: Porinaceae
Porina image
Mauro Tretiach  
  • Greater Sonoran Desert
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Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.
Life habit: lichenized Thallus: crustose, superficial or immersed, often surrounded by a prothallus, often inconspicuous upper surface: various shades and combinations of white, gray, green, orange to pink, or brown; occasionally with isidia or schizidia photobiont: a trentepohlioid alga or Phycopeltis Ascomata: perithecial, often partly immersed in the thallus, occasionally with hairs or bristles involucrellum: always present but sometimes inconspicuous; true exciple: colored or not; yellowish to brownish, orange, reddish or black, often continuous below the hamathecium hamathecium: composed of unbranched or sparingly branched paraphyses; paraphyses: not anastomosing, non-amyloid; periphyses: present in a asci: cylindrical or sometimes elongate-ellipsoid or narrowly obclavate, functionally unitunicate, without conspicuous tholus, uniformly thin-walled, often with a tiny refractive apical ring, non-amyloid, 8-spored ascospores: 2-3 seriate, hyaline, fusiform to filiform, ellipsoid, bifusiform, or oblong, transversely 3-35 septate to muriform with eusepta, 13-120 x 2-20 µm; walls: not ornamented, with or without a gelatinous sheath Conidiomata: pycnidial, immersed to ± sessile conidia: bacilliform, rarely with macroconidia Secondary metabolites: absent or not characterized Geography: cosmopolitan, but most diverse in the tropics Substrate: mostly on bark, but also on living leaves, bryophytes, soil and on calcareous or siliceous rock. Notes: The new (different) systems of generic segregates within Porina as proposed by Harris (1995) and Hafellner and Kalb (1995) are not followed here, because several taxa are known that transcend the proposed borders (McCartney and Malcolm 1997). The genus is characterized by a combination of trentepohlioid photobiont (or Phycopeltis in many foliicolous species), perithecial ascomata with a hamathecium of usually simple paraphyses, uniformly thin-walled, functionally unitunicate asci, and colorless, euseptate and multiseptate to muriform ascospores.
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<< 1 - 50 taxa >>
Porina abietina
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Porina abrupta
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Porina acharii
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Porina aciculosa
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Porina acrocordioides
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Porina acuta
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Porina adflata
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Porina africana
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Porina aggregata
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Porina ahlesiana
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Porina alba
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Porina albella
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Porina albicascens
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Porina albicera
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Porina albida
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Porina albinula
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Porina alineata
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Porina alpina
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Porina aluniticola
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Porina ambigua
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Porina americana
Image of Porina americana
Porina amygdalina
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Porina andamanensis
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Porina andamanica
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Porina andreana
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Porina angusta
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Porina applanata
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Porina aptrootii
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Porina araucariae
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Porina arengae
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Porina argillacea
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Porina aschersonii
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Porina aspera
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Porina astula
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Porina athallina
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Porina athertonii
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Porina atlantica
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Porina atriceps
Image of Porina atriceps
Porina atrocoerulea
Image of Porina atrocoerulea
Porina atroperiostiola
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Porina atropunctata
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Porina augustana
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Porina aurantiaca
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Porina australiensis
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Porina austriaca
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Porina austroatlantica
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Porina austropacifica
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Porina bachmanniana
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Porina bacillifera
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Porina balanina
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This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394