Parmotrema crinitum (Ach.) M. Choisy

Data Set Maintenance: Data set standard item. Data set author(s): Nash T.H. Data set reviewer(s): Nash T.H.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Parmotrema. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Type: Parmlelia crinita Ach.

Taxonomic Literature: Acharius 1814.

Biogeography: Cosmopolitan; submontane and montane. Continent: Africa, Asia-Temperate, Europe, Southern America, and Asia-Tropical. Checklist records: Chile, Great Britain, Japan, Mexico, Sonoran Desert, Sweden and Norway, United States and Canada (continental), and Venezuela.

Ecology: Biotroph; lichenized; corticolous.

Thallus: Foliose, subdivided into main parts, and secondary or without secondary parts, sub irregular, continuous throughout, lobed; lobes elongate, horizontal; plane; branches applanate (moderately flattened); bifacial; not segmented; separate thallus parts 6-9-12 mm wide. Thallus Size and Differentiation: 8-16.5-25 cm in diameter; main branches basally not constricted; apex rounded. Upper Surface: Grey, plane, matt, smooth; not foveate; not convoluted; immaculate; without patches; epruinose; not pseudocyphellate; not wrinkled; ciliate; cilia marginal; without hairs; isidiate; isidia central or laminal, submarginal, cylindrical, ramified, coralloid; without isidiomorphs; not papillate, not pustulate; not sorediate; not tuberculate; not lobulate. Lower Surface: Present, black, black in the centre, brown along the margin; attached by holdfasts; not cyphellate; not wrinkled (but becoming rugulose); rhizinate; rhizines sparse, with a broad non-rhizinate margin, black, not branched; not tuberculate.

Hydrochasic Thallus Movement: Not performing hygrochasic thallus movement.

Upper Cortex: Double-layered.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, forming all across the thallus surface, all across the surface, sparse. Margin: Crenulate, epruinose; not sorediate; isidiate; without pseudocyphellae pseudocyphellae; not ciliate; not hirsute. Hymenium: 65-72.5-80 µm high.

Asci: Dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 25-27.5-30 µm long, 12-14-16 µm wide.

Conidiomata: Present.

Conidia: 3-3.5-4 µm long.

Secondary Metabolites: Present; only in the upper part of the cortex, throughout the cortex, or throughout the thallus medulla, atranorin, constictic acid, or stictic acid, metabolite(s) of unresolved identity: absent.

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

(report generated 04.Okt.2007)