Normandina acroglypta (Norman) Aptroot

in Wirth, Flechtenflora, 2 Aufl.: 634, 1995. Basionym: Thelidium acroglyptum Norman in Fries - Bot. Not.: 154, 1868 (1867).
Synonyms: Arthopyrenia chlorococca (Leight.) A.L. Sm.; Lauderlindsaya acroglypta (Norman) R. Sant.; Lauderlindsaya chlorococca (Leight.) Diederich & Sérus.; Lauderlindsaya erichsenii (Keissl.) Diederich & Sérus.; Sphaerulina chlorococca (Leight.) R. Sant.; Thelidium erichsenii Keissl.; Thelidium sorbinum (Nyl.) Hulting; Verrucaria contribulans Nyl.
Distribution: N - Frl (TSB 26042), Ven (Thor & Nascimbene 2007).
Description: Thallus crustose, episubstratic, grey-green, diffuse, often forming a collar surrounding each perithecium, consisting of granular, goniocyst-like units; soralia scattered, diffuse, concolorous with thallus; soredia 20-40 μm across, often with projecting, colourless hyphae. Perithecia black, 0.2-0.4 mm across, one-quarter to three-quarters immersed in thallus. Excipulum reddish brown but irregularly pigmented; involucrellum absent. Hamathecium of periphyses, interascal filaments absent; hymenial gel I+ red (I+ yellowish or blue at low concentrations of I), K/I+ blue. Asci 8-spored, clavate, the wall thickened in upper part, K/I-. Ascospores (5-)7-septate, hyaline, ellipsoid-fusiform, 25-35(-45) x 6-9 μm. Photobiont chlorococcoid. Spot tests: all negative. Chemistry: without lichen substances.
Note: a mild-temperate lichen, most often found on trees with subacid to base-rich bark, often on mosses; to be looked for further in Italy. It is included in the Italian red list of epiphytic lichens as “Data Deficient” (Nascimbene & al. 2013c).
Growth form: Squamulose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: very rare
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Altitudinal distribution:

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Predictive model
Herbarium samples


P.L. Nimis CC BY-SA 4.0
TSB 26042



P.L. Nimis CC BY-SA 04
TSB 26042


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/