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Microthyrium microscopicum

Microthyrium microscopicum Desm., Annls Sci. Nat., Bot., sér. 2 15: 138 (1841).

           Index Fungorum number: IF 213668; Facesoffungi number: FoF 11941, Fig. 1

Description: see Wu et al. (2011).

Material considered: see Wu et al. (2011).

Fig. 1 Microthyrium microscopicum (K (M): 163346, isotype). a Appearance of ascomata on the host surface. b Squash mount of ascomata. c Section through ascomata. d, e Asci. f, g Ascospores. Scale bars: a = 500 μm, b = 200 μm, c = 20 μm, d, e = 10 μm, f, g = 5 μm.

Importance and distribution

There are 141 Microthyrium epithets in Index Fungorum (2022), but several species have been transferred to other genera such as Aphanopeltis, Asterella, Asterinella, Calothyriopsis, Calothyrium, Cyclotheca, Dictyothyrium, Lembosina, Leptopeltis, Leptothyrium, Lichenopeltella, Micropeltis, Microthyriolum, Muyocopron, Palawania, Phaeothyriolum, Prillieuxina, Rhagadolobium, Ronnigeria, Saccardinula, Schizothyrium, Seynesia, Stomiopeltis, Tothia and Vizella. Microthyrium comprises 91 species known on a wide range of plants such as Calophyllum calaba (Calophyllaceae), Capparis sepiaria (Capparaceae), Carlina salicifolia (Asteraceae), Cryptocarya peumus (Lauraceae), Elaeagnus macrophylla (Elaeagnaceae), Eucalyptus ovata (Myrtaceae), Hedera helix (Araliaceae), Ilex aquifolium (Aquifoliaceae), Lardizabala biternata (Lardizabalaceae), Myrtus communis (Myrtaceae), Phillyrea angustifolia (Oleaceae), Pinus pinea (Pinaceae), Pistacia lentiscus (Anacardiaceae) and Quercus sp. (Fagaceae). Microthyrium is reported from Africa (Canary Islands), Asia (China, India), Australia, Europe (England, Italy, Scotland, Spain, Yugoslavia), South America (Chile) and the United States (Puerto Rico, Virgin Islands).

 

References

Desmazières JBHJ. 1841 – Huitième notice sur quelques plantes cryptogames, la plupart inédites, récemment découvertes en France. Annales des Sciences Naturelles, Botanique 15, 2, 129–146.

Ellis JP. 1976 – British Microthyrium species and similar fungi. Transactions of the British Mycological Society 67, 381–194.

Hyde KD, McKenzie EHC, KoKo TW. 2011 – Towards incorporating anamorphic fungi in a natural classification – checklist and notes for 2010. Mycosphere 2, 1–88.

Kirk P, Cannon P, Minter D, Stalpers JA. 2008 – Dictionary of the Fungi. 10th edn. CAB International, Wallingford.

Ramaley AW. 1999 – Three species of Microthyrium from Nolina. Mycotaxon 70, 7–16.

Schoch CL, Crous PW, Groenewald JZ, Boehm EWA et al. 2009 – A class-wide phylogenetic assessment of Dothideomycetes. Studies in Mycology 64, 1–15.

Wu HX, Schoch CL, Boonmee S, Bahkali AH, Chomnunti P, Hyde KD. 2011 – A reappraisal of Microthyriaceae. Fungal Diversity 51, 189–248.

 

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