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Lecidea circinarioides Casares & Hafellner

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: Lichenologist 28: 41-46, 1996; type specimen label data: Spain, Prov. Almeria, Tabernas, Venta de los Yesos, 570 m, 27 July 1990, M. Casares (GDA).

Taxonomic Literature: Taxonomic notes: Variability of characters very insufficiently known. Casares-Porcel, Hafellner & Gutierrez-Carretero, Lichenologist 28: 41-46, 1996.

Biogeography: Colline. Continent: Europe (Hs) and Africa (Maroc).

Ecology: Biotroph; lichenized; episubstratic; substrate gypsiferous.

Thallus: Areolate (primarily areolate), continuous throughout; lobes angular at the front; separate thallus parts.3-.5 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White or lemon (citrine), plane or convex; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative.

Ascocarps: Not emerging, not constricted at the base, 30-50 per cm², .8-1-(1.5) mm in diam.. Margin: Not flexuose, indistinct, 35-50 µm wide, distinctly pruinose. Disk: Plane to weakly convex, black, pruina scarce or abundant, without an umbo. Exciple: Hyphae radiating outwards; grey; inspersed with crystals. Epithecium: Apical cells green, cell pigment HCl+ blue. Hymenium: 80-100 µm high; white; iodine reaction: hemiamyloid. Subhymenium: 40-60 µm high; white. Hypothecium: White.

Ascospores: Broadly ellipsoid or ellipsoid, (7)-10.4-11-(14) µm long, (4.5)-6-6.7-(8.5) µm wide; wall not ornamented.

Conidia: (7)-8.8-9.2-(11) µm long.

Secondary Metabolites: Not detected.

Spot Tests: Medulla: K –, C –, PD – ascocarp margin (in section): K –, C – disk: C – hypothecium: K – epihymenium: K –.

(report generated 04.Okt.2007)

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