Rinodina aurantiaca Sheard

Data Set Maintenance: Data set compiled. Data set author(s): Bungartz F. (02-08-23). Data set not to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Currently accepted name Rinodina aurantiaca Sheard. Rinodina. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Basionym: Rinodina aurantiaca Sheard. Type: Rinodina aurantiaca Sheard; protologue: Species corticola. Habitus R. capensis similis, sed discis apotheciorum saepe leviter pruinosis; epihymanium 'pannarinum' continens, P+ aurantiacum, typice crystalla sanguinea formans. Cortex 'atranorinum' continens, cortex amphithecii in parte inferiore ad 60-90 µm expansus, columnaris. Ascosporae typo Physiarum. 16.5-(19.3-19.9)-22.6, 19.3 x 9.9, 8.2-(9.7-10.1)-11.6 µm, parietibus pallide pigmentiferis, toro typice absente.; type specimen label data: U.S.A. CALIFORNIA. Siskiyou Co., road to Etna Summit, 2.5 mi SW Etna,
city limits, 1100 m, 19 August, 1989, B. Ryan 24832, with
Rinodina

capensis Hampe, holotype - ASU.

Taxonomic Literature: Bryologist 105: ? (2002).

Biogeography: Northern hemispheric; Mediterranean; montane. Continent: Northern America (endemic). Checklist records: Sonoran Desert and United States and Canada (continental).

Ecology: Biotroph; lichenized; corticolous; episubstratic; growing partially shaded; under conditions which are moist.

Thallus: Crustose, subdivided into main (areoles) parts, rarely rimose or areolate (primarily areolate) (areoles to 0.25-0.75 mm wide), continuous throughout or dispersed throughout and distinctly seperate; lobes angular at the front; separate thallus parts thin. Thallus Outline: Irregular or orbicular; soon disappearing. Upper Surface: Light grey, matt; not isidate; not sorediate.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, soon sessile, slightly constricted at the base, abundant, .35-.55 mm in diam.. Margin: Lecanorine, persistent, distinct, 50-85 µm wide; without a thin rim between disk and thalline margin. Disk: Plane or weakly convex (rarely semi-globose); black; epruinose or pruinose (white, most visible when moist), pruina scarce, white. Exciple: Light grey. Parathecium (proper excipulum): Broad (expanding to 10-20 µm at the periphery), 5-10-(15) µm wide, white. Amphithecium (thalline excipulum): Present; 45-70 µm wide; photobiont sparse. Lower Amphithecium: 60-90 µm high. Amphithecial Cortex: Present; 5-20 µm wide, 25-55 µm wide at the base; outer cortical layer white; inner cortical layer white. Episamma: With episamma. Epithecium: Apical cells spathulate, brownish yellow or brownish red (P+ dark orange, forming crystals). Hymenium: 70-100 µm high; white; not inspers. Hypothecium: (30)-50-90 µm high.

Asci: 50-75 µm long, 16-25 µm wide; dehiscence lecanoralean.

Ascospores: Physcia-type, c. 8 per ascus, ellipsoid, (16.5)-19.3-19.6-19.9-(22.5) µm long, (8)-9.7-9.9-10.1-(11.5) 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, middle brown (at maturity) or pale brown, not ornamented or ornamented.

Conidiomata: Absent resp. not observed (not seen).

Secondary Metabolites: Present; only in the upper part of the cortex (atranorin), atranorin (in cortex) or pannarin (epihymenium).

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

UV-Fluorescence: Upper thallus surface – (negative).

(report generated 13.Nov.2007)