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Lecidea verruca Poelt

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. Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Poelt J., Mitt. Bot. München 4: 187 (1961); type specimen label data: Austria, Tirol, Tuxer Voralpen: Mannshoher Einzelblock, wenig südlich der Lizumer Hütte im Wattental, c. 2000 m, 15 July 1961, J. Poelt & Th. Schauer (M, holotype).

Taxonomic Literature: Taxonomic notes: Anatomically very close to Lecidea tessellata. Studies in the field do not support the suspicion of conspecifity of both species. Hertel H., Herzogia 1: 433-434 (1970); Hertel H., Herzogia 2: 500-501 (1973); Hertel H., Mitt. Bot. München 12: 142-143 (1975); Hertel H., Mitt. Bot. München 17: 179 (1981); Clauzade G., Roux C., Bull. Soc. Bot. Centre-Ouest, nouv. ser., num. spec. 7: 461 (1985); Hertel H., Mitt. Bot. München 28: 225-226 (1989); Türk R., Poelt J., Österr. Akad. Wiss., Biosystematics and Ecology Ser. 3: 65 (1993 - bibliography of Austrian lichens); Hertel H., Biblioth. Lichenol. 58: 176-177 (1995).

Biogeography: Alpine. Continent: Europe (Au, Fe, He, Is, It, No, Sb, Su) and Southern America (Tierra del Fuego).

Ecology: Biotroph (matrix: Aspicilia spec.; espec. A. simoensius and A. grisea); lichenicolous (matrix: Aspicilia spec.; espec. A. simoensius and A. grisea); episubstratic. Host or Phorophyte Taxonomy: Aspicilia.

Thallus: Not subdivided parts, areolate (primarily areolate), continuous throughout; lobes angular at the front; separate thallus parts.3-.8 mm thick. Thallus Size and Differentiation: Small; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Lemon (citrine), brownish yellow, or grey (pale to bluish grey), plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution positive.

Ascocarps: Forming on the pro- or hypothallus, rarely soon sessile, not constricted to slightly constricted at the base, (12)-60-120 per cm², .4-.8-(2.3) mm in diam.. Margin: Not flexuose, persistent to excluded, indistinct, 3-90 µm wide, epruinose. Disk: Plane to weakly convex to strongly convex, black to brown, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3-4.5 µm wide; grey (TEST); inspersed with crystals. Epithecium: Apical cells olive, cell pigment reacting with 10% HCl (in H2O). Hymenium: 45-65 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 0 µm high; white. Hypothecium: White.

Ascospores: Ellipsoid to oblong, (6.5)-8.6-9.1-(12) µm long, (4.5)-4.8-5.8-(6.5) µm wide; wall thick, distinctly differentiated into primary and secondary wall, not ornamented.

Secondary Metabolites: Present, confluentic acid and rarely norstictic acid.

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

(report generated 04.Okt.2007)

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