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Bulbothrix atrichella (Nyl.) Hale

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

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Bulbothrix atrichella (Nyl.) Hale. Parmelia. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia atrichella Nyl. Type: Bulbothrix atrichella (Nyl.) Hale.

Taxonomic Literature: Hale, Phytologia 28: 480 (1974).

Biogeography: Neotropical; colline, submontane, and montane. Continent: Northern America and Southern America. Checklist records: Mexico, Peru, and Sonoran Desert.

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

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

Thallus: Foliose, subdivided into main (lobes) parts, lobed; lobes elongate, imbricate (moderately); separate thallus parts.5-2 mm wide. Thallus Size and Differentiation: 3-6 cm in diameter; apex rounded (subrotund). Thallus Outline: Irregular. Upper Surface: Grey or grey-green (olive gray, turning olive buff in the herbarium), plane or subconvex, glossy (shiny), smooth (to rugose); maculate; maculae punctiform; epruinose; not pseudocyphellate; wrinkled (rugose); ciliate; cilia slender (not slender but bulbate!); not isidate; not pustulate; not sorediate. Lower Surface: Present, black; attached by holdfasts (true rhizines); rhizinate; rhizines moderately abundant, black, not branched or branched, irregularly branched.

Photobiont Layer: Photobiont cells continuous. Medulla: White, loose.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, forming all across the thallus surface, all across the surface, independently from the host thallus or mycelium, soon sessile, abundant, 1-2.5 mm in diam.. Margin: Smooth, persistent, distinct. Disk: Excavate, dark brown, epruinose.

Asci: Clavate; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, spores 8 per ascus, broadly ellipsoid, 7-8 µm long, 5-6 µm wide; septa absent.

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

Secondary Metabolites: Present; only in the upper part of the cortex (atranorin & chloroatranorin) or throughout the thallus medulla (gyrophoric acid), atranorin, chloroatranorin, or gyrophoric acid.

Spot Tests: Cortex: KC + deep yellow, C –, KC –, PD + yellow; medulla: K –, C + red, KC + red, PD –.

(report generated 04.Okt.2007)

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