Trapelia coarctata (Sm.) M. Choisy

Data Set Maintenance: Data set standard item. Data set author(s): Hertel H. (C.Kainz, 03-05-22).

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Trapelia. Lecideaceae Chevall. (1826) @EXCL@ Agyriaceae Corda (1838).

Taxonomic Literature: Taxonomic notes: +prothallus +/- present, white; thallus Pd-, K-. KC+red, C+red;. Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [583-584], Wellington (1985); Purvis O.W. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992).

Biogeography: Continent: Asia-Temperate, Australasia, Europe, and Northern America.

Ecology: Biotroph; lichenized; episubstratic (thin); i.e., bricks; substrate non-calciferous (occasionally on consolidated clay soil).

Thallus: Crustose (smooth or more or less rugose), not subdivided parts, squamulose or areolate (primarily areolate) ("cracked"), continuous throughout or dispersed throughout and distinctly seperate (sometimes). Upper Surface: Pale grey (or pinkish, rarely pale green), brown, or white.

Ascocarps: Soon sessile, strongly constricted at the base, .2-(2) mm in diam.. Margin: Indistinct (thin, white, smooth to crenate, +/- forming a halo-like rim, at least when young). Disk: Brown (to brown-black to rose-pink).

Ascospores: Ellipsoid, 14-25 µm long, 7-13 µm wide; wall thin, not ornamented.

Secondary Metabolites: Gyrophoric acid.

(report generated 04.Okt.2007)