Chaenothecopsis pusilla

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Taxonavigation: Mycocaliciales 

Superregnum: Eukaryota
Regnum: Fungi
Subregnum: Dikarya
Divisio: Ascomycota
Subdivisio: Pezizomycotina
Classis: Eurotiomycetes
Subclassis: Mycocaliciomycetidae
Ordo: Mycocaliciales

Familia: Mycocaliciaceae
Genus: Chaenothecopsis
Species: Chaenothecopsis pusilla


Chaenothecopsis pusilla (Ach.) A.F.W.Schmidt, 1970

Life habit: Fungus of uncertain status: i.e., questionably or weakly lichen-forming; or algicolous/saprophytic; or parasitic when young but saprophytic or lichen-forming when mature; or a lichenicolous lichen.

Substrate and ecology: Saprobic or parasitic on free-living algae or on lichens (often occurring in mosaics with several other calicioid species and then possibly parasitic on Calicium species on old lignum of a variety of trees.

  • Calicium claviculare var. claviculare Ach., Method. Lich.: 90 (1803)



  • A.F.W.Schmidt, Mitt. Staatsinst. Allg. Bot. Hamb. 13: 151 (1970)
  • Schmidt, A. 1970: Anatomisch-taxonomische Untersuchungen a europaischen Arten der Flechtenfamilie Caliciaceae. - Mitteil. Staatssinst. Allg. Bot. Hamburg 13: 111–166.   [RLL List # 80 / Rec.# 16648] - (Recent Literature on Lichens)


  • Coppins, B.J. (1992) Chaenothecopsis Vainio (1927) (pp. 182-185) In: Purvis, O.W., Coppins, B.J., Hawksworth, D.L., James, P.W. and Moore, D.M. (eds.) The Lichen Flora of Great Britain and Ireland. London: Natural History Museum Publication, 710 pp.   [RLL List # 151 / Rec.# 15105] - (Recent Literature on Lichens) (Description of C. pusilla: p. 184)
  • Selva, S.B. 2014: The calicioid lichens and fungi of the Acadian Forest ecoregion of northeastern North America, II. The rest of the story. The Bryologist 117(4): 336–367.   (BioOne)   (Chaenothecopsis pusilla: p. 352)
  • Thomson, J.W. (1997) Chaenothecopsis Vainio (pp. 206-207) In, American Arctic Lichens: 2. The Microlichens. The University of Wisconsin Press, 675 pages.   [RLL List # 170 / Rec.# 18517] - (Recent Literature on Lichens) (Description of C. pusilla: p. 206; distribution map for North America and black-and-white drawing: p. 207)
  • Thomson, J.W. (2003) Chaenothecopsis Vainio (pp. 69-70) In, Lichens of Wisconsin. Wisconsin State Herbarium, University of Wisconsin-Madison, 386 pages.   [RLL List # 190 / Rec.# 24161] - (Recent Literature on Lichens) (Description of C. pusilla: p. 70)
  • Tibell, L. (1999) Calicioid lichens and fungi. - In: Ahti, T.; Jørgensen, P.M.; Kristinsson, H.; Moberg, R.; Søchting, U.; Thor, G. (eds.): Nordic Lichen Flora. Volume 1. Introductory Parts. Calicioid Lichens and Fungi. Nordic Lichen Society, Uddevalla, pp. 20-94.   [RLL List # 182 / Rec.# 21646] - (Recent Literature on Lichens) (Illustration of C. pusilla: plate 6)
  • Tibell, L. and Ryan, B.D. (2004) Chaenothecopsis (pp. 639-641) In: Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C. and Bungartz, F. (eds.), Lichen Flora of the Greater Sonoran Desert Region, Vol. 2. Lichens Unlimited, Arizona State University, Tempe, Arizona, 742 pages.   [RLL List # 196 / Rec.# 25988] - (Recent Literature on Lichens) (Description of C. pusilla: p. 641)
  • Wirth, V. (1995) Chaenothecopsis Vainio (pp. 286-290) - Teil 1) In, Die Flechten Baden-Württembergs, Teil 1 & 2. Eugen Ulmer GmbH & Co., Stuttgart. 1006 pp.; in German.   [RLL List # 159 / Rec.# 20405] - (Recent Literature on Lichens) (Description of C. pusilla: p. 290)


Links to photos[edit]

Vernacular names[edit]

English: Chaenothecopsis lichen
日本語: フレルケピンゴケ