Monerolechia badia (Fr.) Kalb

Bibl. Lichenol., 88: 312, 2004. Basionym: Lecidea badia Fr. - Syst. Orb. Veget., 1: 287, 1825.
Synonyms: Buellia badia (Fr.) A. Massal.; Buellia bayrhofferi (Schaer.) H. Olivier; Buellia conioptiza (Nyl.) B. de Lesd.; Buellia duebenii (Fr.) Hellb.; Buellia pernigrans (Nyl.) Sandst.; Buellia schisticola H. Magn.; Catolechia badia (Fr.) Stein; Karschia bayrhofferi (Schaer.) Rehm; Lecidea bayrhofferi Schaer.; Lecidea conioptiza Nyl.; Lecidea pernigrans Nyl.; Monerolechia bayrhofferi (Schaer.) Trevis.; Rhizocarpon badium (Fr.) Sambo
Distribution: N - Ven, TAA (Hafellner 1979), Lomb, Piem (Favero-Longo & al. 2015), VA (Hafellner 1979, Piervittori & Isocrono 1999, Matteucci & al. 2015c), Lig (Brunialti & al. 1999, Ravera & al. 2022). C - Tosc, Marc (Nimis & Tretiach 1999), Laz, Sar (Monte 1993, Nöske 2000, Rizzi & al. 2011, Giordani & al. 2013, Neuwirth 2018, Brackel & Berger 2019). S - Camp, Pugl, Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996, Brackel & Puntillo 2016), Si (Nimis & al. 1996b, Grillo & al. 1996, Grillo 1998, Grillo & Caniglia 2004, Brackel 2008b).
Description: Thallus squamulose to subcrustose, episubstratic, forming up to 1-2 cm wide patches, without a distinct prothallus, the squamules contiguous, 0.5-1 mm wide, usually convex, matt to shiny, epruinose, chestnut brown to rarely grey-brown, smooth. Cortex of anticlinally arranged, cellular hyphae, the terminal cells swollen, with brown caps, with a thin epinecral layer; medulla white, lacking calcium oxalate crystals, I-. Apothecia lecideine, black, 0.3-1 mm across, with an initially flat, then convex disc and a thin, finally excluded proper margin. Proper exciple narrow, poorly differentiated, aethalea-type, the outer hyphae parallel, moderately swollen and usually strongly carbonized, the inner part paler; epithecium olive-brown to almost black; hymenium colourless, 50-80 µm high, not inspersed with oil droplets, K/I+ blue; paraphyses simple to sparingly branched in upper part, 1.5-2.5 µm thick at mid-level, the apical cells 3-5 µm wide, with a brown cap; hypothecium deep reddish brown. Asci 8-spored, broadly clavate, Bacidia-type. Ascospores 1-septate, not constricted at septum, brown, oblong to ellipsoid with obtuse ends, 10-15(-17) x 5-8.5 µm, the septum narrow, not thickening during spore ontogeny, the internal walls of uniform thickness, smooth but the outer wall weakly ornamented in old spores. Pycnidia rare, urceolate to globose. Conidia bacilliform, 4-5 x 1-1.5 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a holarctic, subtropical to boreal-montane lichen found on steeply inclined, base-rich siliceous rocks, which starts the life-cycle on other lichens, later becoming autonomous.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
paras crustose and foliose lichens

Commonnes-rarity: (info)

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

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 4.0
TSB 10161

Leif Stridvall - Source: (Courtesy: Anita Stridvall)

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10161)