to LIAS


Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.



Lecidea siderolithica Müll. Arg.

Data Set Maintenance: Data set standard item. Data set author(s): Hertel H. (99-01-01). Data set not revised.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: species. Lecidea. Synonyms: Lecidea nigrogrisea Nyl.; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Müller-Argau J., Flora 55: 535-536 (1872); type specimen label data: France, Dépt. Haute-Savoie, in summitate montis Salève ad saxa siderolithica, 15 September 1872, J. Müller-Argau (G, lectotype).

Taxonomic Literature: Taxonomic notes: Near to Lecidea fuscoatra; variability of characters insufficiently known. Hertel H., Biblioth. Lichenol. 58: 171 (1995); sub Lecidea nigrogrisea: Sandstede H., Abhandl. Naturw. Ver. Bremen 21: 80 (1912); Hawksworth D.L., Coppins B.J. in Purvis O.W. et al. 332-333 (1992).

Biogeography: Colline and montane. Continent: Europe (Au, Br, Ga, Ge, It) and Asia-Temperate (China).

Ecology: Biotroph; lichenized; episubstratic; substrate non-calciferous or metalliferous.

Thallus: Areolate (primarily areolate), subsquamulose, continuous throughout, dispersed along the periphery, continuous in the centre, or dispersed throughout and distinctly seperate; lobes angular or rounded at the front; separate thallus parts.2-.35 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Brownish yellow, grey (with a tinge of olive), or brown (very pale brown), convoluted, plane or convex; not sorediate; without thalloconidia thalloconidia.

Upper Cortex: Epicortex present. Medulla: Iodine reaction in Lugol's solution negative.

Ascocarps: Soon sessile, slightly constricted at the base, 25-130 per cm², .4-.9-(1.8) mm in diam.. Margin: Not flexuose or slightly flexuose, persistent or excluded, 50-140 µm wide, epruinose. Disk: Plane to strongly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 2.5-4 µm wide; grey or brown; not inspersed with crystals or inspersed with crystals. Epithecium: Apical cells olive or brown, cell pigment reacting with 10% HCl (in H2O). Hymenium: 45-72 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 15-27 µm high; white. Hypothecium: Brown or dark brown.

Ascospores: Ellipsoid or oblong, (6)-7.3-12.4-(15.5) µm long, (2.5)-3.6-6.4-(7.1) µm wide; wall not ornamented.

Conidia: (6)-7.9-11.2-(12) µm long.

Secondary Metabolites: Present, gyrophoric acid and lecanoric acid.

Spot Tests: Medulla: K –, C – or + red, PD – ascocarp margin (in section): K –, C – or + red; disk: C – hypothecium: K – epihymenium: K –.

(report generated 04.Okt.2007)


In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.

LIAS Home