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

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. Bryoria. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Alectoria fuscescens Gyelnik. Type: Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw.

Biogeography: Boreal; montane, upper montane, subalpine, and alpine. Continent: Africa (East), Europe, and Northern America. Checklist records: Germany, Great Britain, Italy, Mexico, and United States and Canada (continental).

Ecology: Biotroph; lichenized; lignicolous (var. positiva) or corticolous; growing sun-exposed, under conditions which are dry.

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

Thallus: Fruticose, subdivided into main (branches) parts, and secondary (secondary branches) parts, isotomic-dichotomous or anisotomic-dichotomous; pendulous (relatively lax), branches tapered; terete or rarely applanate (moderately flattened); separate thallus parts (.2)-.3-.4-(.6) mm wide. Secondary Thallus: Trunk darkened the branches. Thallus Size and Differentiation: 5-15-(30) cm long. Thallus Outline: Irregular. Upper Surface: Matt or glossy (shiny), smooth; occasionally foveate; not pseudocyphellate; not wrinkled; not isidate; very rarely with isidiomorphs, isidiomorphs on mature and immature soralia (but very rare); sorediate; soralia white, laminal, lateral, sometimes eroding from the tip of tubercles or along scars of fibrils (fissural, sometimes resembling pseudocyphellae when young), linear, isolated, not confluent with other soralia, longitudinal. Lower Surface: Absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form (not seen in North American Material).

Secondary Metabolites: Present; throughout the cortex, throughout the thallus medulla, or in soredia (or soralia), chloroatranorin (accessory in eastern North America), fumarprotocetraric acid, or protocetraric acid.

Spot Tests: Cortex: KC –, C –, KC –, PD – or + red (var. positiva); medulla: K –, C –, KC –, PD – or + red (var. positiva).

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