Fungalpedia – Note 3157, Everhartia

 

Everhartia Sacc. & Ellis, Michelia 2 (8): 580 (1882).

Citation when using this data: Jian Ma et al. 2024 – Fungalpedia.

Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.

Classification: Incertae sedis, Incertae sedis, Incertae sedis, Incertae sedis, Pezizomycotina, Ascomycota, Fungi.

Notes: Everhartia was introduced to accommodate a helicosporous hyphomycete, E. hymenuloides, as the type species, which was found on Sorghum nutans in New Jersey (Saccardo 1882; Linder 1929). Everhartia comprises six species, namely E. aquatica, E. candida, E. hymenuloides, E. lignatilis, E. phoenicis, and E. tumidiapicis, based on morphological data (Yanna et al. 2000). Everhartia is characterized by sporodochial conidiomata, micronematous, mononematous and shorter conidiophores, integrated, terminal, monoblastic and cylindrical conidiogenous cells, and holoblastic, hyaline, helicoid and hemi-circinate conidia (Linder 1929; Yanna et al. 2000). Everhartia resembles Delortia in producing hyaline, horse shoe-shaped conidia. The conidia of Everhartia differ from those of Delortia in having shorter conidiophores and conidia that do not swell (Linder 1929; Goh and Hyde 1997; Yanna et al. 2000). Additionally, Goh and Hyde (1997) suggested that E. phoenicis might be a potential plant pathogen (Yanna et al. 2000).

Type species: Everhartia hymenuloides Sacc. & Ellis, Michelia 2 (8): 580 (1882).

Other accepted species: Species Fungorum – search Everhartia.

Figure 1 – (a) Drepanoconis larviformis (redrawn from Piepenbring et al. (2010)), a Host cells with basidia and other fungal cells. b Mature basidiospores; (b) Helicocephalum sarcophilum (redrawn from Thaxter (1891)); (c) Helicomyxa everhartioides (redrawn from Seifert et al. (2011)).

 

References

Goh TK, Hyde KD. 1997 – Delortia palmicola and two new species from wood submerged in a freshwater stream in Australia. Mycological research 101(1):42–46.

Linder DH. 1929 – A monograph of the helicosporous fungi imperfecti. Annals of the Missouri Botanical Garden 16(3):227–388.

Saccardo P. 1882 – Fungi boreali-americani. Michelia 2(8):564–582.

Yanna, Ho W, Goh T, Hyde KD. 2000 – A new species of Everhartia associated with leaf spots of Phoenix hanceana from Hong Kong. Botanical Journal of the Linnean Society 134(3):465–470.

 

Entry by

Jian Ma, School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand.

 

Published online 10 September 2026

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