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- building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities -
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Chaenotheca
Family: Coniocybaceae
Chaenotheca image
Frank Bungartz
  • Greater Sonoran Desert
  • Resources
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Life habit: lichenized Thallus: crustose, superficial or immersed, farinose, granular, verrucose or squamulose surface: gray, greenish gray, golden yellow, brownish, or bright yellow-green photobiont: primary one a species Dictyochloropsis, Stichococcus, Trentepohlia or Trebouxia, secondary one absent Ascomata: apothecial, with short to long stalk stalk: consisting of periclinally arranged brown hyphae capitulum: globose to obconical; thalline exciple: absent proper exciple: +well developed, formed by periclinally arranged, +intertwined hyphae and continuous with stalk tissue; hypothecium: medium brown, with convex to flat upper surface mazaedium: well developed, pale brown to medium brown; paraphyses: sparingly branched, continuing to grow into the ascospore mass asci: cylindrical, ellipsoid or irregular, dissolving at an early stage, formed from ascogenous hyphae with or without croziers, either singly or in chains ascospores: simple or rarely 1-5-septate, brown to pale brown, forming a dry brown spore mass, globose or ellipsoid-cylindrical, 2.5-9 x 2.5-7.5 µm; wall: +thick, smooth or with an ornamentation of irregular cracks Conidiomata: forming several types: both coelomycetous (pycnidial), spherical with apical ostiole, or hyphomcetous, simple, Phialophora-like; pycnidium wall: thin and consisting of one or a few layers of radially arranged cells; wall-forming cells: with a thick pigmented layer at their distal surface; conidiogenous cells: simple, ellipsoid to cylindrical conidia: acrogenous, hyaline, one-celled, 2-3 x 1 µm Secondary metabolites: pulvinic acid derivatives occur as a pruina and more rarely within the thallus, ß-orcinol depsides and pseudoplacodiolic acid Substrate: mainly on bark and wood, rarely on soil and rocks, mostly in very sheltered situations with high humidity and low light levels Geography: cosmopolitan, mostly cool to temperate. Notes: See Tibell (1999) for fuller description of the genus.
Species within checklist: Mount Wachusett
Chaenotheca chrysocephala
Image of Chaenotheca chrysocephala
Map not
Available
Chaenotheca ferruginea
Image of Chaenotheca ferruginea
Map not
Available
Chaenotheca furfuracea
Image of Chaenotheca furfuracea
Map not
Available
Chaenotheca stemonea
Image of Chaenotheca stemonea
Map not
Available
Chaenotheca trichialis
Image of Chaenotheca trichialis
Map not
Available
Chaenotheca xyloxena
Image of Chaenotheca xyloxena
Map not
Available

 

This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394
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