Rinodina juniperina Sheard

Data Set Maintenance: Data set compiled. Data set author(s): Bungartz F. @EXCL@ Sheard J. (02-08-29). Data set not to be published after submission.

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

Type Information: Basionym: Rinodina juniperina Sheard. Type: Rinodina juniperina Sheard ined.; protologue: Species ccorticola vel lignicola. Thallus tenuis, atrogriseus, nitidus, sine substantis lichenum, demum continuus vel areolatus; areolae consorediis marginalibus. Apothecia erumpentia, marginibus saepe quam thallo dilutioribus. Ascosporae typo Physciarum, 12.8 - (16.1 - 16.9) - 20.1, 16.5 x 8.1, 6.8 - (8.0-8.2) - 9.4 µm. Distributio in parte occidentali interiore Americae.; type specimen label data: USA: New Mexico. An Miguel County, 28 mi. SW of Las Vegas, 2.5 mi W of Sands, in Juniperus, 6500 ft., 11 June 1957, S. Sushan S 11108 (Holotype - COLO).

Taxonomic Literature: Bryologist 105: ? (2002).

Biogeography: Northern hemispheric (cool temperate); submontane. Continent: Northern America. Checklist records: Mexico, 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 (verucae or areoles) parts, granular (verrucose) or areolate (primarily areolate), continuous throughout or dispersed throughout and distinctly seperate; lobes angular or rounded at the front; separate thallus parts (.2)-.6-1 mm wide; thin (sometime thick). Thallus Outline: Orbicular; indistinct; soon disappearing. Upper Surface: Dark grey or grey-green, glossy (shiny); sorediate; soralia peripheral, confluent, but not fusing.

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 (erumpent), moderately abundant, .35-.8 mm in diam.. Margin: Lecanorine, smooth, persistent or excluded (in comvex apothecia), distinct, 45-95 µm wide; without a thin rim between disk and thalline margin. Disk: Plane, weakly convex (rarely markedly), or excavate (sometimes becoming cracked); black. Exciple: White. Parathecium (proper excipulum): 5-10 µm wide, white. Amphithecium (thalline excipulum): Present (rarely expanded below); photobiont sparse or abundant. Amphithecial Cortex: Present; 5-10 µm wide; outer cortical layer white; inner cortical layer white. Epithecium: Apical cells spathulate, brownish red. Hymenium: 60-90 µm high; white; gelatinized; not inspers; iodine reaction: Lugol’s positive. Interascal Hyphae: Distinctly branched, not or scarcely anastomosed. Hypothecium: (25)-50-100 µm high; white; not inspers.

Asci: Clavate; 45-65 µm long, 14-19 µm wide; dehiscence lecanoralean.

Ascospores: Physcia-type, c. 8 per ascus, spores 1 per ascus, ellipsoid, (12.5)-16.1-16.5-16.9-(20) µm long, (6.8)-8-8.1-8.2-(9.4) 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 (with broad pore canal), becoming pigmented, dark brown (torus present at maturity) or middle brown, not ornamented.

Conidiomata: Present.

Conidiophores: Vobis-type I. Conidia: Bacilliform; 3-5 µm long; 1 µm wide.

Secondary Metabolites: Not detected.

(report generated 13.Nov.2007)