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Lecidea cancriformis C. W. Dodge & G. E. Baker

Data Set Maintenance: Data set standard item. Data set author(s): Hertel H. (99-01-01). Data set not revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Lecidea. Synonyms: Lecidea phillipsiana R.Filson; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Dodge C.W., Baker G.E., Ann. Missouri Bot, Gard. 25: 539-540 (1938); type specimen label data: Antarctica, South Victoria Land, Queen Maud Land, Scudder Mt., 86°03'S, 150°40'W, granite, 1934, Q.A. Blackburn, R.S. Russell, S.D.L. Paine QM(2) (FH, holotype).

Taxonomic Literature: Hertel H., Beih. Nova Hedwigia 79: 417 (1984); Inoue M., Nankyoku Shiryo (Nation. Inst. Polar Res., Tokyo) 35(3): 279-280 (1991).

Biogeography: Alpine. Continent: Antarctica (continental Antarctica).

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

Thallus: Not subdivided parts, areolate (primarily areolate), continuous throughout to dispersed along the periphery, continuous in the centre to dispersed throughout and distinctly seperate; lobes angular to rounded at the front; separate thallus parts 0-1.2 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted to basally constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White to lemon (citrine) to brownish yellow to grey to brown (beige), convoluted, plane to convex; not sorediate; without thalloconidia thalloconidia.

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

Ascocarps: Soon sessile, slightly constricted to strongly constricted at the base, 4-150 per cm², .6-1.5-(2.1) mm in diam.. Margin: Not flexuose to slightly flexuose, excluded, 30-200 µm wide, epruinose. Disk: Plane to weakly convex to strongly convex, black, epruinose, pruina scarce, without an umbo. Exciple: Hyphae radiating outwards?; 2.5-4 µm wide; grey; not inspersed with crystals or inspersed with crystals. Epithecium: Apical cells green or turquoise, cell pigment HCl+ blue. Hymenium: 33-50 µm high; white or rarely pale green; iodine reaction: Lugol’s positive. Subhymenium: 15-40 µm high; white. Hypothecium: Brown.

Ascospores: Ellipsoid or oblong, (6)-8.1-10.2-(13) µm long, (2.5)-2.9-3.8-(5) µm wide; wall not ornamented.

Secondary Metabolites: Not detected or present, norstictic acid or stictic acid (traces).

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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