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

The description has been generated directly from a database. In cases of errors and insufficiencies consult the corresponding LIAS data entry and revision forms to make the necessary modifications. Changes will appear in the subsequent update of data entry forms and natural language descriptions. [To verify the actual status of the pages, select the reload frame function in the context menu!]
These pages are XHTML compatible designed. May be that problems arise with older web browser versions.

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

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Lecidea. Synonyms:-; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Zwackh W., Lich. Exs. 602 (1880) - Psora atrobrunnea var. subfumosa Arnold: Arnold F., Verhandl. Zool. Bot. Ges. Wien 26: 486, 1875; type specimen label data: Austria, Tyrolia: Kitzbühler Alpen, Kleiner Rettenstein, am Wege zum Roßgrubkogel, August 1873, F. Arnold (M; n.v.).

Taxonomic Literature: Taxonomic notes: Close to Lecidea atrobrunnea; variability of characters insufficiently known. Hertel, Biblioth. Lichenol. 58: 172-173 (1995).

Thallus: Areolate (primarily areolate), continuous throughout or dispersed along the periphery, continuous in the centre; lobes angular or rounded at the front; separate thallus parts.3-.6 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted to basally constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Brown, plane to convex; not sorediate; without thalloconidia thalloconidia.

Upper Cortex: Epicortex present. Medulla: Iodine reaction in Lugol's solution negative to in Lugol's solution positive (weak).

Ascocarps: Soon sessile, slightly constricted to strongly constricted at the base, 5-40 per cm², .8-1.3-(2) mm in diam.. Margin: Not flexuose to slightly flexuose, persistent to excluded, 30-65 µm wide, epruinose. Disk: Plane to weakly convex to strongly convex, black, epruinose, without an umbo. Exciple: Paraplectenchymatous; hyphae 3-5 µm wide; grey; inspersed with crystals. Epithecium: Apical cells green to turquoise, cell pigment reacting with 10% HCl (in H2O), cell pigment HCl+ blue. Hymenium: 45-58 µm high; white or rarely pale green; iodine reaction: Lugol’s positive. Subhymenium: 18-35 µm high; white or rarely pale green. Hypothecium: Rarely brownish yellow or brown.

Ascospores: Oblong, (6)-8-10-(12) µm long, (2.8)-3.5-4.6-(5) µm wide; wall not ornamented.

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

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