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Brodoa oroarctica (Krog) Goward

Data Set Maintenance: Data set compiled (from Sonoran Desert Flora Vol.1). Data set author(s): Bungartz F. @EXCL@ Clerc, P. (02-03-10). Data set to be published after submission; February 2002.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Brodoa oroarctica (Krog) Goward. Brodoa. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Hypogymnia oroarctica Krog. Type: Brodoa oroarctica (Krog) Goward.

Taxonomic Literature: Bryologist 89: 222 (1986).

Biogeography: Arctic, subarctic, boreal, and cosmopolitan; alpine. Continent: Asia-Temperate, Europe (Northern), and Northern America. Checklist records: Sonoran Desert (San Francisco Peaks near Flagstaff) and United States and Canada (continental).

Ecology: Biotroph; lichenized; saxicolous; growing sun-exposed.

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Trebouxia; Trebouxiaceae; Trebouxiales.

Thallus: Foliose, subdivided into main parts, lobed; lobes rounded (inflated) at the front; branches terete or applanate (moderately flattened) (main, central lobes (on rock)). Thallus Size and Differentiation: 2-8 cm in diameter; apex rounded. Thallus Outline: Irregular or orbicular. Upper Surface: Grey or brown, convex, glossy (shiny) (towards the edges), smooth; fissurate; fissures sparingly developed, not particularly oriented oriented; foveate (shallowly sulcate); maculate; epruinose; pseudocyphellate; not isidate; not sorediate. Lower Surface: Present, black, black in the centre, brown along the margin; attached by the whole lower surface; pseudocyphellate (no true pseudocyphellae, but distinctly cracked).

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (not seen in Sonoran Material). Ascocarps: Apothecioid, forming in the thallus centre, all across the surface, soon sessile, sparse, up to 5 mm in diam.. Margin: Smooth, distinct. Disk: Plane, brown or dark brown.

Ascospores: c. 8 per ascus, spores 8 per ascus, subglobose or ellipsoid, 10-12 µm long, 8 µm wide, obtuse; septa absent.

Conidiomata: Present; immersed; formed lateral (along the margin of thallus parts), all accross the thallus surface.

Conidia: Bifusiform; 6 µm long; 1 µm wide.

Secondary Metabolites: Throughout the cortex (atranorin and chloratranorin) or throughout the thallus medulla (other substances), atranorin, chloroatranorin, physodic acid, and protocetraric acid, of the following substance class(es): ß-orcinol depsides and ß-orcinol depsidones.

Spot Tests: Cortex: KC + deep yellow, –, PD + yellow; medulla: K –, C –, KC + red, PD – or + deep yellow (orange, not yellow, close to apices).

(report generated 04.Okt.2007)

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