Melaspilea ochrothalamia Nyl.

Flora, 48: 355, 1865.
Distribution: C - Sar (Rizzi & al. 2011). S - Camp (Nimis & Tretiach 2004, Garofalo & al. 2010).
Description: Thallus crustose, whitish, grey green or pale rusty orange, usually poorly evident and visible only around the apothecia. Apothecia black, sessile, isolated or gathered in small clusters, rounded or angular by mutual compression, 0.3-0.5(-0.7) mm across, with an expanded, flat to convex disc, and a thin, sometimes brown-orange tinged proper margin. Proper exciple well-developed, prosoplectenchymatous, brown, K-, not extending below the hymenium; epithecium brown-green to orange-brown; hymenium pale brown, I-; paraphyses thread-like, sparingly branched and anastomosing, capitate, the apical cells swollen, up to 4 μm wide; hypothecium colourless to pale straw-coloured. Asci elongate-clavate, thickened at apex and with an internal apical beak, K/I-. Ascospores 1-septate, with subequal cells, at first hyaline then pale brown, sole-shaped, sometimes with attenuated apices, 17-21(-28) x 7-10(-12) µm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on acid bark and lignum; hitherto known only from western Europe, perhaps more widespread, but never common, in Tyrrhenian Italy. It is included in the Italian red list of epiphytic lichens as “Data Deficient” (Nascimbene & al. 2013c).
Growth form: Crustose
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: very rare
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 31643

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (31643)


Etayo, J/ Aguirre, B/ Diederich, P (1993) Interesting or new lichens from the Atlantic Pyrenees and the north of the Iberian Peninsula. II. Nova Hedwigia

van den Boom, PPG/ Masselink, AK (1999) Enkele interessante vondsten van lichenen en lichenicole fungi in Nederland III [Some interesting finds of lichens and lichenicolous fungi from the Netherlands III]. Buxbaumiella

Nimis, PL/ Tretiach, M (2004) Delimiting Tyrrhenian Italy: A lichen foray in the SW part of the peninsula. Contributions to Lichenology. Festschrift in Honour of Hannes Hertel

Gasparyan, A./ H. J. M. Sipman/ W. Von Brackel (2014) A contribution to the lichen-forming and lichenicolous fungi flora of Armenia. Willdenowia