Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Physcia poncinsii Hue

Data Set Maintenance: Data set compiled (from Sonoran Lichen Flora Vol.1). Data set author(s): Bungartz F. (02-02-21). Data set to be published after submission; February 2002.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Physcia poncinsii Hue. Physcia. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia poncinsii Hue. Type: Physcia poncinsii Hue.

Biogeography: Northern hemispheric; subtropical, pantropical, neotropical, and palaeotropic; coastal, colline, and submontane. Continent: Northern America and Southern America. Checklist records: Mexico, Sonoran Desert, and United States and Canada (continental).

Ecology: Biotroph; lichenized; corticolous (on twigs) or saxicolous; episubstratic; growing sun-exposed or partially shaded; under conditions which are dry or moist.

Thallus: Foliose, subdivided into main parts, lobed; lobes plane; sometimes imbricate; separate thallus parts 1-2 mm wide. Thallus Size and Differentiation: Up to (3) cm in diameter. Thallus Outline: Irregular or orbicular; soon disappearing. Upper Surface: White, matt or glossy (shiny) (some specimens on rocks); maculate (as white dots) or sometimes immaculate; maculae punctiform; epruinose or pruinose (with or without pruina); eciliate; without hairs; not isidate; sorediate; soralia laminal or subperipheral (in some specimens), almost capitate, punctiform, irregular, or linear (development starts from cracks), fully excavated, confluent, but not fusing (may develop into rounded patches); not blastidiate; not schizidiate; not lobulate. Lower Surface: Present, pale grey, white, or pale brown; attached by holdfasts (true rhizines); rhizinate; rhizines white, without projections, not branched or branched (rhizines simple to sparsely furcate), sparsely furcate; not sorediate; not tomentose.

Upper Cortex: Present; outer cortical layer paraplectenchymatous; inner cortical layer prosoplectenchymatous or paraplectenchymatous (intermediate type). Medulla: White. Lower Cortex: Present.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, soon sessile or substipitate, sparse, up to 1.5 mm in diam.. Margin: Lecanorine, persistent, distinct; sometimes sorediate; not isidiate; not ciliate; not hirsute. Disk: Plane; black or brown. Epithecium: With epithecium (simple or forked); apical cells subulate (clavate with dark brown cap), pale brown. Hymenium: White; not inspers. Interascal Hyphae: Scarcely branched (paraphyses simple or forked above). Subhymenium: White. Hypothecium: White; not inspers.

Asci: Cylindrical; dehiscence lecanoralean (Lecanora-Type).

Ascospores: Pachysporaria-type, c. 8 per ascus, ellipsoid, (16)-19-24.5-(26) µm long, (7.5)-8.5-10.5-(11) µm wide; septa present; transversally septate; 1-transversally septate; wall thickened at the septum, becoming pigmented, dark brown (at maturity) or middle brown.

Conidiomata: Present; sparse.

Conidia: Bacilliform (not bacilliform but cylindrical); 4-6 µm long; 1 µm wide.

Secondary Metabolites: Present; throughout the thallus medulla (atranorin, zeorin and sometimes unidentified substances), atranorin or hopane-6a,22-diol (with triterpenes), metabolite(s) of unresolved identity: present (sometimes).

Spot Tests: Present reactions. Upper surface: K + deep yellow, C –, KC –, PD + yellow; cortex: KC + deep yellow, –, PD + yellow; medulla: K + yellow; C –, KC –, PD + deep yellow; soredia: K + deep yellow; KC –.

(report generated 13.Nov.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.