Bryoparasitic Pezizales

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Octosporella jungermanniarum (P. Crouan & H. Crouan) Döbbeler
Nova Hedwigia 31(4): 828 (1980))
Basionym: Nectria jungermanniarum P. Crouan & H. Crouan, Florule Finistère (Paris): 37 (1867)
Octosporella jungermanniarum, ascomata Octosporella jungermanniarum, spores
1: Octosporella jungermanniarum, ascomata on Plagiochila porelloides, Germany, Lower Saxony, S Eberholzen, leg. H. Thiel 2020-03-02 (59511) 2: Octosporella jungermanniarum, ascospores, Germany, Lower Saxony, S Eberholzen, leg. H. Thiel 2020-03-02 (59511)
Ascomata: perithecioid, egg- to barrel-shaped, 250-560 x 200-400 µm, orange, with many protruding, hair-like hyphae to 500 µm long, giving the whole ascoma a cactus-like appearance
Paraphyses: 2-4 µm wide, filiform, rarely branched
Asci: 100-160 x 19-27 µm
Ascospores: 28-40 x 12-14 µm, ellipsoid to narrowly ellipsoid, smooth, with cap-like thickenings at the poles, mostly with three yellowish droplets, one large at the center and two smaller ones laterally,
Hosts: Plagiochila asplenioides, P. porelloides, rarelyl on other liverworts such as Chiloscyphus polyanthos, Lophocolea bidentata, Pellia endiviifolia
Habitat: forests, rocks, in places with high air humidity
Distribution: Austria, Czech Republic, Croatia, England, France, Germany, Ireland, Italy, Rumania, Russia, Slovenia, Spain, Switzerland, Wales

References:
  • Corner, E. J. H. 1929. A humrariaceous fungus parasitic on a liverwort. - Annals of Botany 43: 491-505. [as Neotiella crozalsiana]
  • Crouan, P. L. & Crouan, H. M. 1867. Florule du Finistère. - Paris: Klincksieck. [as Nectria jungermanniarum]
  • Döbbeler, P. 1978. Moosbewohnende Ascomyceten I. die pyrenocarpen, den Gametophyten besiedelnde Arten. - Mitteilungen der Botanischen Staatssammlung München 14: 1–360. [as Pseudonectria jungermanniarum]
  • Döbbeler, P. 1980. Untersuchungen an moosparasitischen Pezizales aus der Verwandtschaft von Octospora. - Nova Hedwigia 31: 817-864.
  • Döbbeler, P. & Hertel, H. 2013. Bryophilous ascomycetes everywhere: Distribution maps of selected species on liverworts, mosses and Polytrichaceae. - Herzogia 26: 405–16.
  • Marsh, T., Döbbeler, P., Huhtinen, S. & Stenroos, S. 2010. Ascomycetes and anamorphi fungi growing on Plagiochila (Hepaticae) in Finland. - Karstenia 50: 59–72.
  • Rubio, E. 2015. Ascofrance.fr, link
  • Stewart, B. 2018. South Wales Bryophytes, link
Images:
Octosporella jungermanniarum, ascospores Octosporella jungermanniarum, hair-like hyphae from the outside of ascoma
3: Octosporella jungermanniarum, ascospores, Germany, Lower Saxony, S Eberholzen, leg. H. Thiel 2020-03-02 (59511) 4: Octosporella jungermanniarum, hair-like hyphae from the outside of ascoma, Germany, Lower Saxony, S Eberholzen, leg. H. Thiel 2020-03-02 (59511)

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