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Ramboldia petraeoides (C. Bab. & Mitt.) Kantvilas & Elix

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (03-01-27). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Ramboldia. Synonyms: Pyrrhospora petraeoides (Nyl. ex Church. Bab. & Mitten) Hafellner; Protoparmelia petraeoides (Nyl. ex Church. Bab. & Mitten) Hertel; Lecidea aspidula Kremp.; Lecidea diaphaenenta Knight; Lecidea enteroxantha Knight; Lecanoraceae Körb. (1855); Lecanorineae; Lecanorales.

Type Information: Basionym: Lecidea petraeoides Nyl. ex Church. Bab. & Mitten (1859).

Taxonomic Literature: Rambold G., Biblioth. Lichenol. 34: 1-345 (1989); Kantvilas G., Elix J.A., Bryologist 97(3): 296-304 (1994).

Biogeography: Continent: Africa, Australasia, and Europe.

Ecology: Biotroph; lichenized; episubstratic; growing sun-exposed; substrate non-calciferous.

Thallus: Crustose, areolate (primarily areolate) (verrucose-); separate thallus parts thick (0.2-1.2(-3) mm). Thallus Size and Differentiation: Up to.8 cm long. Thallus Outline: Soon disappearing or persistent (mostly at the thallus margin, mostly not developed); grey (dark grey brown) or dark brown. Upper Surface: Pale to dark brown or lemon (citrine) (creamy), smooth (mostly).

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

Reproduction Strategy: With sexual (and possible asexual) stages (crowded to dispersed, up to 250/cm²). Ascocarps: Apothecioid, forming independently from the host thallus or mycelium, becoming adnate or soon sessile, not constricted at the base, .5-.8 mm in diam.. Margin: Lecideine/biatorine, persistent or excluded, 50-100 µm wide. Disk: Plane or weakly convex, dark brown or brownish red, epruinose. Exciple: Not carbonized. Parathecium (proper excipulum): Pale brown or white. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells slightly swollen or distinctly swollen, brown or brownish red. Hymenium: 33-55 µm high; white. Interascal Hyphae: Distinctly branched. Hypothecium: White.

Asci: 30-45 µm long, 10-12 µm wide.

Ascospores: Oval, 8.5-11 µm long, 3-5 µm wide.

Conidiomata: Present; immersed.

Conidia: Filiform; 14-15.5-17 µm long, .5 µm wide.

Secondary Metabolites: Norstictic acid (and connorstictic acid).

Spot Tests: Cortex: PD + yellow (and K+ red).

(report generated 04.Okt.2007)

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