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Lecidella stigmatea (Ach.) Hertel & Leuckert

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (01-06-26). Data set reviewer(s): Knoph J.-G.; revised (03-10-22); to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Lecidella. Synonyms: Lecidea prominula Borr.; Lecidella aequata (Flk.) Krempelh.;
Lecidella stigmatea (Ach.) Hertel & Leuckert f. egena (Krempelh.)
Clauz. & Roux; Lecidella glabra Krempelh.; Lecidella incongrua
(Nyl.) Arnold; Lecidella micacea Koerb.; Biatora arctooides Hellb.;
Lecidea cinnamomea Hellb.; Lecidea diasemoides Nyl.; Lecidea
subsequens Nyl.; Lecidella vulgata (Zahlbr.) M. Choisy; Lecidea
imitatrix Zahlbr.; Lecidea lacuscrateris H. Magn.; Lecidea arthoniza Nyl.; Bacidia biseptata H. Magn.; Bilimbia lecideoides Anzi; Bacidia ostrogothica Malme; Diplophragmia petsamoensis Vain.; Lecidea trigemmis Stizenb.;
Lecanoraceae Körb. (1855); Lecanorales.

Type Information: Basionym: Lecidea stigmatea Ach. 1810. Lich. Univ.: 161.

Taxonomic Literature: Knoph, J.-G. (1990): Untersuchungen an gesteinsbewohnenden xanthonhaltigen Sippen der Flechtengattung Lecidella (Lecanoraceae, Lecanorales) unter besonderer Berücksichtigung von außereuropäischen Proben exklusive Amerika; Bibl. Lichenol. 36: 1-183 [139-150].
Knoph, J.-G. & Leuckert, C. (1994): Chemotaxonomic studies in the saxicolous species of the lichen genus Lecidella (Lecanoraceae, Lecanorales) in America. - Nova Hedwigia 59: 455-508 [496-499].
Knoph, J.-G. & Leuckert, C. (2000): Chemotaxonomische Studien in der Gattung Lecidella (Lecanorales, Lecanoraceae) III. Die gesteinsbewohnenden Arten mit farblosem Hypothecium unter besonderer Berücksichtigung von europäischem Material. - Herzogia 14: 1-26 [15-16].

Biogeography: Continent: Asia-Temperate, Australasia, Europe, Northern America, and Southern America.

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

Thallus: Crustose, strongly rimose, areolate (primarily areolate), or granular (fine); separate thallus parts thin or thick (rarely more than 0.5 mm). Thallus Outline: Persistent (rarely); dark grey. Upper Surface: Grey, white (dirty), grey-brown, or brownish red (pale rusty, sometimes partly), matt.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, strongly constricted at the base, .8-1.2-2 mm in diam.. Margin: Lecideine/biatorine, excluded, distinct or indistinct (about 0.1 mm). Disk: Plane to more or less weakly convex (when older), black to dark brown (sometimes, if shaded ?), epruinose. Exciple: Carbonized; dark green. Parathecium (proper excipulum): White. Amphithecium (thalline excipulum): Present; photobiont sparse. Epithecium: Apical cells slightly swollen, dark green to olive (olivaceous, when older or damaged ?) to brownish red (when older or damaged ?). Hymenium: White. Hypothecium: Brown (rarely, when damaged ?) to white.

Ascospores: c. 8 per ascus, ellipsoid to ovoid, 11-17 µm long, 6-9 µm wide; septa absent; wall thick (not halonate), distinctly differentiated into primary and secondary wall (not halonate), not ornamented (not halonate).

Conidiomata: Adnate.

Pycnidia: Globular. Conidiophores: Vobis-type III. Conidia: Filiform; 15-28 µm long.

Secondary Metabolites: Atranorin to chloroatranorin to hopane-6a,22-diol to lichexanthone to norlichexanthone (rarely).

Spot Tests: Upper surface: K – (negative) to + deep yellow, C – (very rarely) to + orange, PD – to + yellow.

(report generated 04.Okt.2007)

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