Dermatocarpon complicatum (Lightf.) W. Mann

Lich. Bohem. Observ. Dispos.: 66, 1825. Basionym: Lichen miniatus var. complicatus Lightf. - Fl. Scot., 2: 858, 1777.
Synonyms: Dermatocarpon aquaticum var. decipiens auct.; Dermatocarpon decipiens auct.; Dermatocarpon fluviatile var. decipiens auct. non (A. Massal.) Vain.; Dermatocarpon luridum var. decipiens auct. non (A. Massal.) Riedl; Dermatocarpon miniatum var. compactum (Lamy) Zahlbr.; Dermatocarpon miniatum var. complicatissimum (Nyl.) Lettau; Dermatocarpon miniatum var. complicatum (Lightf.) Th. Fr.; Dermatocarpon weberi var. decipiens auct.; Endocarpon complicatum (Lightf.) Ach.; Endocarpon decipiens auct. non A. Massal.; Endocarpon miniatum var. decipiens auct. non A. Massal.
Distribution: N - Frl (TSB 14671), Ven, TAA, Lomb, Piem (Isocrono & al. 2004), VA (GDOR 186), Emil (Fariselli & al. 2020). C - Tosc, Sar (Nöske 2000).
Description: Thallus foliose, multi-lobed, the lobes interconnected, with numerous holdfasts scattered over the lower surface. Lobes (3-) 5-15(-34) mm wide. Upper surface grey, usually pruinose, with an epinecral layer of air-filled hyphae; lower surface brown to dark brown, usually smooth but occasionally rugose or slightly reticulate. Upper and lower cortex colourless with the outermost part brown; medulla white, consisting of filamentous hyphae, not amyloid. Perithecia common, slightly oblong, with a colourless exciple which is brown in the uppermost part. Hamathecium or periphyses and periphysoids, interascal filaments absent; hymenial jelly hemiamyloid. Asci 8-spored, clavate, fissitunicate, the wall thickened above, not amyloid. Ascospores 1-celled, hyaline,(5.5-)9-13(-17) x (4-)5.5-7(-8.5) µm. Pycnidia common, immersed. conidia bacilliform. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, I-. Chemistry: no lichen substances.
Note: in the delimitation of this critical taxon I follow Roux & coll. (2014), who claim that the greatest majority of the records of D. decipiens from upland areas refer to this species, which differs from D. luridum in the pruinose thallus and the medulla reacting I-. However, according to Heidmarsson (2017) this species, and D. intestiniforme, are just morphs of D. miniatum.
Growth form: Foliose, umbilicate
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 4.0.
TSB 16877

Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.

P.L. Nimis CC BY-SA 4.0.
TSB 14829

P.L. Nimis CC BY-SA 4.0.
TSB 14829