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Lecidea advena Nyl.

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: Nylander W. in Hue A.M., Arch. Mus., ser. 3, 3: 133 (1891); type specimen label data: Himalayas (most likely E. Nepal or Sikkim), 14000 ft (= 4650 m), on granite, (1846-48), J.D. Hooker (H-Nyl 16.020).

Taxonomic Literature: Hertel H., Khumbu Himal 6: 227-228 (1977); Inoue M., J. Sci. Hiroshima Univ., Ser. B, Div. 2 (Bot.), 18(1): 20-22 (1982).

Biogeography: Alpine. Continent: Asia-Temperate (Nepal, Sikkim, Japan).

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

Thallus: Areolate (primarily areolate), continuous throughout; lobes angular or rounded at the front; separate thallus parts.4-1.4-(2) mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Grey (beige), convex; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative.

Ascocarps: Soon sessile, not constricted or slightly constricted at the base, 15-80 per cm², .5-.8-(1.5) mm in diam.. Margin: Not flexuose, persistent or excluded, 50-90 µm wide, epruinose. Disk: Plane to strongly convex, black, epruinose, pruina scarce, without an umbo. Exciple: Hyphae radiating outwards; grey (TEST); inspersed with crystals. Epithecium: Apical cells olive or brown. Hymenium: (55)-60-90-(100) µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 0-50 µm high; white. Hypothecium: White.

Ascospores: Ellipsoid, (14)-16.5-18-(20) µm long, (7)-9.1-9.4-(12) µm wide; wall not ornamented (TEST).

Conidia: (5)-5.5-6.5-(7) µm long.

Secondary Metabolites: Present, norstictic acid and stictic acid (minor).

Spot Tests: Medulla: K + red, C –, PD + deep yellow (cortex); ascocarp margin (in section): K –, + deep yellow, or + red, C – disk: C – hypothecium: K + purplish brown (chinoide reaction); epihymenium: K –.

(report generated 04.Okt.2007)

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