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Lecidea hassei Zahlbr.

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 antoniensis H.Magn.; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Zahlbruckner A., Ann. Mycol. 10: 374 (1912); type specimen label data: USA, California, Santa Monica Range, W of Los Angeles, H.E. Hasse 1336 (W, holotype).

Taxonomic Literature: Hertel H., Decheniana 127: 67 (1975); Culberson C.F., Hertel H., The Bryologist 82: 192-196 (1979).

Biogeography: Colline. Continent: Northern America (USA (California, Nevada)).

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

Thallus: Not subdivided parts, dispersed throughout and distinctly seperate; lobes angular at the front; separate thallus parts 0-.15 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White, plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative or in Lugol's solution positive (very pale).

Ascocarps: Soon sessile, strongly constricted at the base, 25-60 per cm², .8-1-(1.6) mm in diam.. Margin: Not flexuose or slightly flexuose (TEST), persistent, 100-150 µm wide, epruinose. Disk: Plane to weakly convex, black, epruinose, without an umbo. Exciple: Grey or yellow (as in L. lithophila); inspersed with crystals. Epithecium: Apical cells olive or green. Hymenium: 40-50 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 0-25 µm high; white. Hypothecium: White or brownish yellow.

Ascospores: Oblong or cylindrical, (7.5)-10.2-11.2-(15) µm long, (2.5)-2.9-3.3-(4.5) µm wide; wall not ornamented.

Secondary Metabolites: Present, schizopeltic acid.

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

(report generated 04.Okt.2007)

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