Rinodina badiexcipula Sheard

Data Set Maintenance: Data set authentic and compiled. Data set author(s): Sheard J. (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 Data set not to be published after submission.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 badiexcipula Sheard. Rinodina. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Basionym: Rinodina badiexcipula Sheard. Type: Rinodina badiexcipula Sheard; protologue: Species corticola vel saxicola. Habitus R. oreganae similis, sed thallus 'sphaerophorinum' continens. Cortex amphithecii in parte inferiore ad (10-)40-60(-100) µm expansus columnaris. Parathecium badium. Ascosporae typo Physciarum, 21.9-(26.4-27.3)-31.8, 26.8 x 14.0, 11.1-(13.7-14.3)-16.9 µm. Species in regione 'California' dicta endemica.; type specimen label data: U.S.A. CALIFORNIA. Del Norte Co., along U.S. Route 199 just S of Oregon/California border, 41deg 59.6min N, 123deg 43.1min W, on Alnus
rubra, 500-600m, 04 May 1991, T. Tonsberg 14696 (BG), with R. laevigata.

Taxonomic Literature: Bryologist- 105: ? (2002).

Biogeography: Northern hemispheric; Mediterranean; submontane. Continent: Northern America. Checklist records: Sonoran Desert.

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

Thallus: Crustose, not subdivided or subdivided into main (areoles) parts, sometimes rimose or areolate (primarily areolate); lobes horizontal; angular at the front; separate thallus parts.25-.4-.55 mm wide; thin. Thallus Outline: Irregular or orbicular; indistinct or distinct; developed as prothallus; soon disappearing or persistent (if present); black. Upper Surface: Grey or dark brown, matt; not isidate; not sorediate.

Upper Cortex: Present.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, slightly constricted at the base, abundant, .5-1-(1.4) mm in diam.. Margin: Lecanorine, smooth, persistent, prominent, 65-125 µm wide; with a thin, inner rim visible between disk and thalline margin (sometimes conspicuous). Disk: Plane; black; epruinose or pruinose, pruina yellow greenish (orange, not yellowish green). Exciple: Brown; inspersed with crystals. Parathecium (proper excipulum): Broad (expanding to 15-30 µm), 5-15 µm wide, brown. Amphithecium (thalline excipulum): Present; 60-110 µm high, inspersed with crystals, crystals small (sphaerophorin), abundant (sphaerophorin), dissolving in 10% KOH (sphaerophorin); photobiont sparse or abundant. Lower Amphithecium: 90-120 µm high, prosoplectenchymatous (columnar), of anticlinal (columnar) hyphae. Amphithecial Cortex: Present; 10-20 µm wide, (20)-40-60-(100) µm wide at the base; outer cortical layer brown. Episamma: Without episamma or sometimes with episamma (orange, dissolving in KOH). Epithecium: Apical cells spathulate, brownish red. Hymenium: 120-140 µm high; white; gelatinized (moderately); not inspers. Interascal Hyphae: Distinctly branched, not or scarcely anastomosed. Hypothecium: (35)-60-80-(110) µm high; white or brownish yellow (particular in upper part).

Asci: 80-100 µm long, 23-30 µm wide; dehiscence lecanoralean.

Ascospores: Physcia-type, c. 4 or c. 8 per ascus, spores (4)-8 per ascus, (22)-26.4-26.8-27.3-(32) µm long, (11)-13.7-14-14.3-(17) 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 (torus) or pale brown (wall), not ornamented or slightly ornamented.

Conidiomata: Present.

Conidiophores: Vobis-type VI. Conidia: Bacilliform; 4.5 µm long; 1-1.5 µm wide.

Secondary Metabolites: Present; throughout the thallus medulla, metabolite(s) of unresolved identity: present (sphaerophorin (major), isosphaeric acid (minor)).

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

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

(report generated 13.Nov.2007)