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Hypotrachyna paraphyscioides Sipman
Nomenclature
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Family: ParmeliaceaeGenus: Hypotrachyna
SUMMARY
Mycobank MB 517785
Thallus foliose, corticolous, 5–10 cm wide, loosely adnate, not coriaceous, dichotomously to subdichotomously lobate, ciliate. Lobes sublinear to subirregular, mostly separate, (0.5–)1.5–3 mm wide, plane or slightly convex, with subtruncate apices. Upper surface pale grey with black marginal rims, slightly shiny, epruinose, maculate, lacking soredia, isidia, pustules, dactyls or lobules, and with intact upper cortex. Medulla white. Lower surface black, pale brown towards the lobe tips. Rhizines absent. Marginal cilia present, black, 1–3 mm long, somewhat flexuous and 1–2 times furcately branched at rather wide angles, occasionaly also present away from the margin on the lower side. Apothecia frequent, 2–7 mm in diam., with concave, finally flat, brown, glossy discs and crenulated, incurved margins. Ascospores ellipsoid, 10–13 x 6–7 µm. Pycnidia frequent, laminal, immersed. Conidia weakly bifusiform, ca. 6 x 0.5 µm. Secondary chemistry: upper cortex K+ yellow, C–, KC–, P–, UV–; medulla K–, C+ yellow-orange, KC+ orange, P–, UV–; upper cortex with atranorin, medulla with barbatic acid (major), obtusatic acid (trace), 4-O-demethylbarbatic acid (major) and norobtusatic acid (trace) (TLC).