Rinodina capensis Hampe

Data Set Maintenance: Data set compiled (from Sheard manuscript for Sonoran Desert Flora Vol.2). Data set author(s): Bungartz F. (02-08-30). Data set not to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Currently accepted name Rinodina capensis Hampe. Rinodina. Synonyms: Rinodina corticola (Arnold) Arnold; Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Basionym: Rinodina capensis Hampe. Type: Rinodina capensis Hampe.

Taxonomic Literature: A. Massal.: Memor. I. R. Isti. Veneto 10: 87 (1861)
Arnold: Verhandl. zool.-bot. Gesell. Wien 29: 370 (1879).

Biogeography: Northern hemispheric; Mediterranean; colline and submontane. Continent: Europe (southern and central) and Northern America (Coastal Ranges, Sierra Nevada and Rocky Mountains). Checklist records: Sonoran Desert and United States and Canada (continental).

Ecology: Biotroph; lichenized; corticolous (, a pioneer on twigs and small branches); episubstratic; growing sun-exposed or partially shaded; under conditions which are dry or moist.

Thallus: Crustose, subdivided into main (areoles) parts, areolate (primarily areolate) (to sublobate); lobes angular (to sublobate (marginal areoles)) at the front; separate thallus parts (.2)-.5-1 mm wide; thin. Thallus Size and Differentiation: Small. Thallus Outline: Orbicular; lobed; indistinct or distinct; margin sometimes lobulate (marginal areoles); soon disappearing. Upper Surface: Light grey, matt; not isidate; not sorediate. Lower Surface: Firmly attached attached; attached by the whole lower surface.

Upper Cortex: Present.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, not emerging (at first), becoming adnate or soon sessile (becoming), abundant, .5-.8 mm in diam.. Margin: Lecanorine, smooth, persistent, distinct, 65-115 µm wide; sometimes with a thin, inner rim visible between disk and thalline margin. Disk: Excavate (rarely half-globose) or plane; black. Exciple: White. Parathecium (proper excipulum): Broad (expanding to (10) 15-35 µm above), 5-15 µm wide, white. Amphithecium (thalline excipulum): Present; 60-100 µm wide; photobiont sparse or abundant. Lower Amphithecium: Prosoplectenchymatous (of columnar hyphae), of anticlinal (of columnar hyphae) hyphae. Amphithecial Cortex: (5)-10-20 µm wide, (20)-35-60 µm wide at the base; outer cortical layer white; inner cortical layer white. Epithecium: Apical cells spathulate, brownish red. Hymenium: 80-100-(120) µm high; white; more or less gelatinized; not inspers. Interascal Hyphae: Distinctly branched, not or scarcely anastomosed. Hypothecium: 90-120 µm high; white; not inspers.

Asci: Clavate; 60-70 µm long, 16-23 µm wide; dehiscence lecanoralean.

Ascospores: Physcia-type, c. 8 per ascus, spores 8 per ascus, ellipsoid, (16)-19.3-19.7-20.2-(23.7) µm long, (8.5)-10.2-10.5-10.7-(12.5) µm wide; septa present; transversally septate; 1-transversally septate; forming early during spore ontogeny (Physciaceae-type A); wall apically thickened, subapically not thickened, thickened at the septum, becoming pigmented, dark brown or middle brown, ornamented.

Conidiomata: Present.

Conidiophores: Vobis-type I. Conidia: Bacilliform; 4-5 µm long; 1 µm wide.

Secondary Metabolites: Present; only in the upper part of the cortex (atranorin), atranorin or hopane-6a,22-diol (trace).

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

(report generated 13.Nov.2007)