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Lecidella vorax Leuckert & Poelt

Data Set Maintenance: Data set compiled. Data set author(s): Kainz C. (01-07-03). Data set reviewer(s): Kainz C.; revised @EXCL@ not revised (01-09-04); to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Lecidella. Lecanoraceae Körb. (1855); Lecanorales.

Type Information: Basionym: Lecidella vorax Leuckert & Poelt in Nimis & Poelt 1987. Studia geobotanica 7 (1): 133-134.

Taxonomic Literature: Knoph J.-G., Biblioth. Lichenol. 36: 160-162 (1990).

Biogeography: Continent: Europe.

Ecology: Biotroph; lichenized or lichenicolous; growing on non-calciferous rock. Host or Phorophyte Taxonomy: Lecanora, Lecanoraceae.

Thallus: Crustose, rimose or areolate (primarily areolate); separate thallus parts thick (up to / more than 1.5 mm). Thallus Outline: Persistent (up to 0.5 mm wide margin); black or grey. Upper Surface: Brown (orange-brown), lime green, or orange, smooth (rarely, often strongly wrinkled); wrinkled.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Becoming adnate (rarely, when damaged ?) or soon sessile, slightly constricted at the base, up to 1.2 mm in diam.. Margin: Lecideine/biatorine, excluded, indistinct to distinct. Disk: Plane to weakly convex, black, epruinose. Exciple: Not carbonized; dark green. Parathecium (proper excipulum): Light brown or brownish red. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells slightly swollen, dark green or olive (olivaceous). Hymenium: White. Hypothecium: Brownish red.

Ascospores: c. 8 per ascus, ellipsoid, 11-13.5 µm long, 6-7 µm wide; septa absent; wall thick (not halonate), distinctly differentiated into primary and secondary wall (not halonate), not ornamented (not halonate).

Secondary Metabolites: Arthothelin (2,4,5-trichloronorlichexanthone) (+ Chlornorlichexanthone; + Dichlornorlichexanthone; + Dichlor-O-methylnorlichexanthone) or thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone), of the following substance class(es): xanthones.

Spot Tests: Upper surface: K – (negative), C + orange, PD –.

(report generated 04.Okt.2007)

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