Hymenelia heteromorpha (Kremp.) Lutzoni

in Lutzoni & Brodo, Syst. Bot., 20: 250, 1995. Basionym: Aspicilia cinereorufescens var. heteromorpha Kremp. - Denkschr. bot. Ges. Regensburg, 4, 2: 175, 1861.
Synonyms: Ionaspis annularis H. Magn.; Ionaspis heteromorpha (Kremp.) Arnold; Ionaspis ochracella (Nyl.) H. Magn.; Ionaspis reducta H. Magn.; Ionaspis rhodopis var. melanopsis (Sommerf.) Zahlbr.; Ionaspis schismatopis (Nyl.) Hue
Distribution: N - Ven (Nimis 1994), TAA, Lomb (Nascimbene & al. 2021), Piem (TSB 34612).
Description: Thallus crustose, endosubstratic or rarely thinly episubstratic, continuous and film-like or rimose-areolate in older parts, pale yellow-grey to reddish brown. Apothecia 0.1-0.25 mm across, immersed in pits and often surrounded by a thin circular crack, with a greenish black, concave disc, and a thin, more or less prominent, concolorous margin which is more evident in the wet state. Proper exciple green to blue-green K- N+ red; epithecium deep blue-green, K-, N+ red; hymenium 100-140(-160) µm high, mostly colourless; paraphyses simple or sparingly branched, submoniliform in upper part, the apical cells not swollen; hypothecium colourless. Asci 8-spored, cylindrical-clavate, the outer wall K/I+ blue, but the inner walls and apical dome K/I-. Ascospores 1-celled, hyaline, globose to broadly ellipsoid, 7-14 x 6-10 µm. Pycnidia immersed, with a green wall reacting N+ red. Conidia bacilliform. Photobiont trentepohlioid, the cells 10-18 µm wide. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a probably holarctic species found on dolomite and hard limestone in rather sheltered situations, with optimum near treeline.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

123456


Predictive model
Herbarium samples


Pier Luigi Nimis - CC BY-SA 4.0
TSB 34651



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34651)
2002/01/30



P.L. Nimis CC BY-SA 04
TSB 7439



D. Puntillo CC BY-SA 4.0
probably misidentified



Pier Luigi Nimis - CC BY-SA 4.0
TSB 34651



Pier Luigi Nimis - CC BY-SA 4.0
TSB 34651



Pier Luigi Nimis - CC BY-SA 4.0
TSB 34651



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (19713)
2001/12/18