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Lepraria achariana Flakus & Kukwa |
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Nomenclatural data
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Lichenologist 39(5): 464 (2007); type: Bolivia, Dept. La Paz, Prov. Manco Kapac, Mt. Horca del Inca near Copacabana village, 16°10'15"S, 69°05'05"W, 18 June 2006, A. Flakus 8670 (KRAM-L—holotypus).
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Morphology
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Thallus crustose, leprose, with powdery appearance; greenish grey to grey; thin; margin diffuse, lobes absent; cortex absent; true medulla absent but hypothallus may look like medulla; hypothallus usually well developed but hyphae loosely packed, white or orange in places (anthraquinones); areoles absent; squamules absent; soredia abundant, fine, up to 45 µm in diam., round; wall rather well developed but not complete; projecting hyphae usually absent, rarely few present, more common on lower side of marginal and single soredia on substratum, short, up to 10 µm, long on lower side of marginal and single soredia on substratum; consoredia prevalent, up to 75(-150) µm in diam.; isidia-like structures absent. Photobiont chlorococcoid, cells up to 13 µm in diam., sometimes with autospores visible inside.
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Chemistry
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Lecanoric acid, roccellic/angardianic acid ±, 2 to 4 unidentified anthraquinones ± (2 of them major). K– or lower surface K+ purple in patches, C+ carmine red, KC+ red, PD–.
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Remarks
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L. neojackii sometimes has very similar morphology to L. achariana but does not contain lecanoric acid. Chemically similar species that can produce lecanoric acid include L. atrotomentosa, L. goughensis, L. impossibilis, L. lecanorica. See the discussion under L. atrotomentosa.
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Ecology and distribution
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Substrate and ecology: humus, terricolous mosses, rocks; found in open areas of high Andean Puna vegetation and upper montane cloud forest. Distribution: South America (Bolivia).
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