Hyperphyscia pandani (H. Magn.) Moberg

Data Set Maintenance: Data set compiled (from Sonoran Desert Lichen Flora). Data set author(s): Bungartz F. (02-04-26). Data set to be published after submission; February 2002.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Hyperphyscia pandani (H. Magn.) Moberg. Hyperphyscia. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Basionym: Physcia pandani H. Magn., Arkiv Bot. 32: 65 (1945). Type: Hyperphyscia pandani (H. Magn.) Moberg, Nord. J. Bot. 7: 722 (1987).

Biogeography: Subtropical; colline and submontane. Continent: Northern America and Pacific ((from Hawaii)). Checklist records: Sonoran Desert.

Ecology: Biotroph; lichenized; lignicolous or corticolous (nutrient rich); episubstratic; growing sun-exposed or partially shaded; under conditions which are dry or moist (often riparian).

Thallus: Crustose or foliose (to subfoliose; lobes very tightly attached), subdivided into main parts, squamulose, lobed (to subfoliose; lobes very tightly attached); lobes horizontal; plane; separate thallus parts narrow; .3-.6-(1) mm wide. Thallus Size and Differentiation: Very small; up to 3 cm in diameter; apex curved downwards (adnate). Thallus Outline: Sometimes irregular or orbicular (usually). Upper Surface: Grey, brown (to dark brown), or grey-brown, matt; pruinose (rarely); pruina scarce; whitish; eciliate; without hairs; not isidate; sorediate; soralia laminal, capitate or maculiform, fully excavated; not blastidiate; not schizidiate; not lobulate. Lower Surface: Present, black or grey, firmly attached attached; attached by holdfasts (rarely with a few true rhizines but usually without any rhizines); not rhizinate or rarely rhizinate; rhizines very sparse, not branched.

Upper Cortex: Present; outer cortical layer paraplectenchymatous (cells with lumina of 3-7 µm in diameter); inner cortical layer prosoplectenchymatous. Medulla: White. Lower Cortex: Absent or present (often rudimentary (integrating with the substrate)).

Reproduction Strategy: Only known as sterile, asexually reproducing form or rarely with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile or substipitate, sparse, small, 1 mm in diam.. Margin: Lecanorine, smooth, persistent, distinct. Disk: Plane; black or brown; epruinose. Epithecium: Apical cells pale brown. Hymenium: White. Hypothecium: Brownish red.

Asci: Dehiscence lecanoralean (Lecanora-type).

Ascospores: Pachysporaria-type, c. 8 per ascus, spores 8 per ascus, ellipsoid, 16-18 µm long, 8-10 µm wide; septa present; transversally septate; lumina of equal size; wall apically thickened, subapically thickened, thickened at the septum, becoming pigmented, dark brown (at maturity) or middle brown.

Conidiomata: Present; strongly abundant.

Conidia: Fusiform (filiform, not fusiform); 15-20 µm long; .5-1 µm wide.

Secondary Metabolites: Present; skyrin.

Spot Tests: Absent reactions.

(report generated 13.Nov.2007)