Ephebe perspinulosa Nyl.

in Norrl., Meddeland. Soc. Fauna Fl. Fenn., 1: 7, 1876.
Synonyms: Ephebe papillata H. Magn.; Ephebe trachytera (Nyl. ex Vain.) Henssen; Ephebeia perspinulosa (Nyl.) Räsänen
Distribution: N - Piem (TSB 38003).
Description: Thallus microfruticose-filamentous, brown-black to black, dark-green to brown when wet, attached by a a narrow gelatinous holdfast, of terete, pointed filaments with numerous short, spinule-like side branches, (25-)50 µm thick in upper parts, 75-100(-110) µm thick in basal parts, forming 2-10 mm wide tufts. Mycobiont cells loosely paraplectenchymatous, short-celled. Apothecia sessile, c. 0.2 mm across, lateral or terminal, developing from pycnidia on swellings on the branches, with a punctiform, dark brown disc, and a thin, persistent thalline margin. Proper exciple thin or absent; hymenium gelatinous, colourless, the upper part brown, I+ blue-green, K/I+ blue; paraphyses sparingly branched, the apices thickened; hypothecium colourless. Asci 8-spored, cylindrical-obclavate, thin-walled, with a K/I+ blue outer layer, without apical dome. Ascospores 1-celled, hyaline, globose, 4-6 µm wide. Pycnidia black, developing laterally from the filaments. Conidia bacilliform, 2.5-4 x c. 1 µm. Photobiont cyanobacterial ( Stigonema);photobiont trichomes with true branchings, i.e. side branchlets formed by periclinal cell divisions in the photobiont trichome. Spot tests: all negative. Chemistry: without lichen substances.
Note: on periodically wetted siliceous rocks above and near treeline; perhaps more widespread in the Alps.
Growth form: Fruticose filamentous
Substrata: rocks
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
Periodically submerged (e.g. in creeks)

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: absent
Montane belt: absent
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:

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Curtis Randall Björk – CC BY-SA 4.0
British Columbia, Clearwater Valley, Hemp Creek Canyonlands Date: 2012-04-02 Lignicolous, in mixed conifer-deciduous forest