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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 Canomaculina conferenda (Hale) Elix. Canomaculina. Synonyms: Rimeliella conferenda (Hale) Kurok.; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmotrema conferendum Hale. Type: Canomaculina conferenda (Hale) Elix.

Biogeography: Subtropical and neotropical; submontane and montane. Continent: Northern America and Southern America. Checklist records: Sonoran Desert (Sierra Madre Occidental in northern Sinaloa).

Ecology: Biotroph; lichenized; corticolous or saxicolous; growing partially shaded, under conditions which are moist.

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

Thallus: Foliose, subdivided into main (lobes) parts, irregular, lobed; lobes elongate, horizontal to imbricate; separate thallus parts 10-15 mm wide. Secondary Thallus: Trunk grey-yellow. Thallus Size and Differentiation: 4-12 cm in diameter; apex rounded. Thallus Outline: Orbicular. Upper Surface: Pale grey, grey-green, or grey-yellow, plane, glossy (shiny), smooth; fissurate (with age); fissures reticulate; maculate (abundant); maculae reticulate (becoming cracked with age); not pseudocyphellate (often cracked but true pseudocyphellae lacking); wrinkled (rugulose); ciliate; cilia slender; not isidate; not pustulate; sorediate; soralia subperipheral, subapical, forming from cracks or fissures, linear, soredia farinose. Lower Surface: Present, black or pale brown, black in the centre, pale brown along the margin; attached by holdfasts (true rhizines); rhizinate (centrally); rhizines sparse, black, not branched.

Upper Cortex: Present; eucortical; epicortex present; porous. Medulla: White, loose; iodine reaction in Lugol's solution negative (with Cetraria-type lichenan).

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

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

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

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