Chaenotheca

Chaenotheca is a genus of lichenized fungi within the family Coniocybaceae.^[1] The sexual reproduction structures are a mass of loose ascospores that are enclosed by a cup shaped exciple sitting on top of a tiny stalk, having the appearance of a dressmaker's pin (called a mazaedium), hence the common name pin lichen.^[2]: 15 Genus members are also commonly called needle lichens.^[3] Photobiont partners for Chaenotheca include members of the algae genera Symbiochloris, Trebouxia, Trentepohlia, and Tritostichococcus.^[4]

Chaenotheca
Chaenotheca chlorella
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Coniocybomycetes
Order:	Coniocybales
Family:	Coniocybaceae
Genus:	Chaenotheca (Th.Fr.) Th.Fr. (1860)
Type species
Chaenotheca chrysocephala (Turner ex Ach.) Th.Fr.
Synonyms
Calicium b Chaenotheca Th.Fr. (1856)

Species

• Chaenotheca balsamconensis J.L.Allen & McMullin (2015)^[5] – North America
• Chaenotheca biesboschii Tibell & van der Pluijm (2019)^[6] – Netherlands
• Chaenotheca brachypoda (Ach.) Tibell (1987)
• Chaenotheca brunneola (Ach.) Müll.Arg. (1862)
• Chaenotheca chlorella (Ach.) Müll.Arg. (1862)
• Chaenotheca chrysocephala (Ach.) Th.Fr. (1860)
• Chaenotheca citriocephala (F.Wilson) Tibell (1985)
• Chaenotheca confusa Tibell (1998)^[7] – South America
• Chaenotheca degelii Tibell (1983)
• Chaenotheca deludens Tibell (1987)
• Chaenotheca erkahomattiorum Selva (2013)^[8] – North America
• Chaenotheca ferruginea (Turner) Mig. (1930)
• Chaenotheca furfuracea (L.) Tibell (1984)
• Chaenotheca gracilenta (Ach.) Mattsson & Middelb. (1987)
• Chaenotheca gracillima (Vain.) Tibell (1984)
• Chaenotheca hispidula (Ach.) Zahlbr. (1922)
• Chaenotheca hygrophila Tibell (1980)
• Chaenotheca laevigata Nádv. (1934)
• Chaenotheca longispora Reese Næsborg & Tibell (2019)
• Chaenotheca nitidula Tibell (2002)^[9] – North America
• Chaenotheca papuensis Aptroot & Tibell (2003)
• Chaenotheca phaeocephala (Turner) Th.Fr. (1861)
• Chaenotheca selvae Maloles & McMullin (2018)
• Chaenotheca stemonea (Ach.) Müll.Arg. (1862)
• Chaenotheca trichialis (Ach.) Hellb. (1870)
• Chaenotheca xyloxena Nádv. (1934)