Rinodina grandilocularis Sheard

Data Set Maintenance: Data set compiled. Data set author(s): Bungartz F. @EXCL@ 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 Data set not to be published after submission.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 grandilocularis Sheard. Rinodina. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Basionym: Rinodina grandilocularis Sheard. Type: Rinodina grandilocularis Sheard; protologue: Species corticola vel lignicola. Thallus crassus, fuscus, superficie nitida, sine substantis lichenum. Apothecia erumpentia, marginibus saepe quam thallo dilutioribus. Ascosporae typo Physciarum, 15.7 - (18.4 - 19.0)-21.8, 18.7 x 10.2, 8.6 - (10.1 - 10.5) - 11.8 µm, primum parietibus tenuibus. Distributio in parte occidentali interiore Americae borealis.; type specimen label data: U.S.A. COLORADO. San Juan C., Mesa Verde National Park, Soda Canyon
and Battleship Rock area, 37.14N 108.30W, on Juniperus sp., 2150-
2270m, 29 May 1980, T.H. Nash 18126. Holotype - ASU.

Taxonomic Literature: Bryologist 105: ? (2002).

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

Ecology: Biotroph; lichenized; lignicolous or corticolous; episubstratic; growing sun-exposed; under conditions which are dry.

Thallus: Crustose, subdivided into main (areoles) parts, areolate (primarily areolate) (marginal areoles sometimes sublobate); lobes angular (swollen, marginal areoles sublobate) at the front; separate thallus parts thick. Thallus Outline: Irregular or orbicular; soon disappearing. Upper Surface: Dark grey or grey-brown, glossy (shiny); not isidate; not sorediate.

Upper Cortex: Present.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Orbicular, not emerging (at first), becoming adnate to later soon sessile, not constricted at the base, moderately abundant, .6-.8 mm in diam.. Margin: Lecanorine, smooth, persistent, distinct, 80-110 µm wide. Disk: Plane to weakly convex (sometimes slightly); black. Parathecium (proper excipulum): Up to 10 µm wide, white. Amphithecium (thalline excipulum): Present; 70-100 µm wide; photobiont sparse to abundant. Amphithecial Cortex: Present; 5-20 µm wide, up to 40 µm wide at the base; outer cortical layer white (epinecral layer); inner cortical layer brown (???). Epithecium: Apical cells spathulate, brown. Hymenium: 85-110 µm high; white. Interascal Hyphae: Distinctly branched, not or scarcely anastomosed. Hypothecium: 40-80 µm high.

Asci: 50 µm long, 20 µm wide; dehiscence lecanoralean.

Ascospores: Physconia-type, c. 8 per ascus, spores 8 per ascus, ellipsoid, (15.5)-18.4-18.7-19-(22) µm long, (8.5)-10.1-10.2-10.5-(12) µm wide; septa present; transversally septate; 1-transversally septate; forming early during spore ontogeny (Physciaceae-type A); wall apically thickened, subapically thickened, thickened at the septum, becoming pigmented, dark brown (maybe with a dark torus) to pale brown, slightly ornamented.

Conidiomata: Present.

Conidiophores: Vobis-type I or Vobis-type VI. Conidia: Bacilliform; 5-6.5 µm long; 1.5 µm wide.

Secondary Metabolites: Not detected.

(report generated 13.Nov.2007)