Endogonomycetes Doweld emend. Tedersoo

Tedersoo, Leho, Magurno, Franco, Alkahtani, Saad & Mikryukov, Vladimir, 2024, Phylogenetic classification of arbuscular mycorrhizal fungi: new species and higher-ranking taxa in Glomeromycota and Mucoromycota (class Endogonomycetes), MycoKeys 107, pp. 249-271 : 249-271

Endogonomycetes Doweld emend. Tedersoo

Type order.

Endogonales Jacz. & P. A. Jacz.

Description.

Fruiting body absent, rarely present - hypogeous or on debris, globose, irregular, sometimes resupinate, 1–20 mm in diam., may be composed of aggregated zygosporangial clusters. Reproductive structures as zygosporangia (in Endogone , Jimgerdemannia ) or chlamydospores (in Vinositunica , Densospora ), aggregated in the fruiting body or as chlamydospores on extraradical hyphae (in Planticonsortium ). Chlamydospore wall continuous, multilayered, with dense subtending hyphae, lacking septa. Hyphae filamentous, coenocytic, sometimes with secondary septa, rarely yeast-like (in Bifiguratus ). Forms a monophyletic group in Mucoromycota, as the least inclusive clade covering accessions UDB 025468, UDB 28692, EUK 1201418, EUK 1203196, EUK 1602762, EUK 1202520, EUK 1203766, EUK 1107335 and EUK 1602357 (Suppl. material 3).

Notes.

Endogonomycetes harbours currently 17 orders and two unassigned, potentially order-level groups represented by sequences EUK 1604020 and EUK 1603073 (GSMc plot G 3308, Juniperus communis coppiced grassland soil in Atla, Estonia, 58.30122 ° N, 21.93600 ° E); and EUK 1602478 (GSMc plot G 4627, mixed forest soil in Tudusoo, Estonia, 59.11368 ° N, 26.75944 ° E).