KEY to terricolous lichens - italic

45
Solorinella asteriscus
79
Thallus crustose, white-pruinose, reduced to a few triangular lobes all around the
apothecia, more visible in the wet state, thin, K-, C-, KC-, P-. Pruina diffuse.
Apothecia frequent, lecanorine, sessile, up to 4 mm diam. Surface brownish black
when dry, paler when wet, plane, smooth. Margin distinct, lobulate, pruinose.
Paraphyses simple, not apically thickened, free. Asci clavate. Ascospores 2-celled,
hyaline, narrowly ellipsoid, constricted at septa, curved, more than 32 per ascus, 7-17
x 2-4 µ. Photobiont chlorococcoid. - Note: a typical lichen of steppe grasslands on
loess, restricted to a few alpine valleys with a strongly continental climate.
Apothecial margin (section!) with a well-developed cortex
Rinodina olivaceobrunnea
Thallus crustose, grey-brown, thin, areolate, K-, C-, KC-, P-. Areolae rounded,
flattened, smooth, contiguous, adpressed to the substratum, non imbricate. Upper
cortex paraplectenchymatous. Apothecia frequent, lecanorine, sessile, slightly
constricted, up to 0.7 mm diam. Surface dark brown to greyish brown, convex. Margin
distinct, thin, smooth. Paraphyses distinctly thickened above. Asci clavate. Ascospores
2-celled, not hyaline, ellipsoid, thick-walled, 8 per ascus, 16-24 x 7-10 µ. Pycnidia
dark, immersed. Conidia bacilliform. Photobiont chlorococcoid. Apothecial cortex J-.
- Note: on soil, bryophytes and plant debris in tundra-like environments, certainly
widespread throughout the Alps.
79 Apothecial margin (section!) without a well-developed cortex 80
80 Hypothecium 60 µ tall 81
81 Medulla orange at least in lower parts. Ascomata dark brown to reddish brown.
Ascospores 21-34 x 10-15 µ
Rinodina mniaraea v. cinnamomea
Thallus crustose, pale brown to reddish brown, thin, areolate, K-, C-, KC-, P-. Areolae
rounded, flattened, smooth, contiguous, adpressed to the substratum, non imbricate.
Medulla orange at least in lower parts, K+ red. Apothecia frequent, lecanorine, sessile,
slightly constricted, up to 1.5 mm diam. Surface dark brown to reddish brown,
convex. Margin distinct, thin, smooth. Paraphyses distinctly thickened above. Asci
clavate. Ascospores 2-celled, not hyaline, ellipsoid, thick-walled, 8 per ascus, 21-34 x
10-15 µ. Pycnidia dark, immersed. Conidia bacilliform. Photobiont chlorococcoid. -
Note: on soil, mosses, plant debris, in tundra-like environments.
81 Medulla white. Ascomata dark brown. Ascospores 20-34 x 10-15 µ
Rinodina mniaraea v. mniaraea
Thallus crustose, pale brown to reddish brown, thin, areolate, K-, C-, KC-, P-. Areolae
rounded, flattened, smooth, contiguous, adpressed to the substratum, non imbricate.
Medulla white. Apothecia frequent, lecanorine, sessile, slightly constricted, up to 1.5
mm diam. Surface dark brown, convex. Margin distinct, thin, smooth. Paraphyses
distinctly thickened above. Asci clavate. Ascospores 2-celled, not hyaline, ellipsoid,
thick-walled, 8 per ascus, 20-34 x 10-15 µ. Pycnidia dark, immersed. Conidia
bacilliform. Photobiont chlorococcoid. - Note: on soil, mosses, plant debris, in tundralike
environments.
82 Ascospores 4 per ascus
Caloplaca tetraspora
Thallus crustose, grey, thin, areolate, granulose, K-. Soredia K-. Apothecia frequent,
lecanorine, sessile, slightly constricted, up to 1 mm diam. Surface rusty red, convex,