Jahnulales

Aliquandostipitaceae

Aliquandostipitaceae Inderb.

Index Fungorum number: IF82130

 

Type genus: Jahnula Kirschst.

 

Notes: Aliquandostipitaceae, typified by Aliquandostipite Inderb. is characterized by globose to subglobose ascomata, and one-septate ascospores (Inderbitzin et al. 2001). The sexual morph genera, Aliquandostipite, Jahnula and Megalohypha (Kirschstein 1936; Inderbitzin et al. 2001; Ferrer et al. 2007), and asexual morph genera, Brachiosphaera, Speiropsis and Xylomyces are currently accommodated within this family (Tubaki 1958; Descals et al.1976; Goos et al. 1977; Campbell et al. 2007; Suetrong et al. 2011; Wijayawardene et al. 2018).

 

Key to freshwater sexual genera of Aliquandostipitaceae (Dong et al. 2020)

1. Ascomata hyaline or slightly pigmented……………………………………………….2

1. Ascomata dark…………………………………………………………………………...3

2. Ascospores with longitudinal sulcate striations, without appendages or sheath....Megalohypha

2. Ascospores lacking longitudinal sulcate striations, often with a large sheath…..Aliquandostipite

3. Peridium composed of single row of cells…………………………………………….Neojahnula

3. Peridium not as above…………………………………………………………………..4

4. Ascospores without sheath or appendage……………………………………………Jahnula

4. Ascospores with sheath or appendage………………………………………………..5

5. Ascospores surrounded by a wavy mucilaginous sheath…………………......Pseudojahnula

5. Ascospores mostly with a refractive mucilaginous pad at each end………………Ascagilis

 

References:

Campbell J, Ferrer A, Raja HA, Sivichai S et al. (2007) Phylogenetic relationships among taxa in the Jahnulales inferred from 18S and 28S nuclear ribosomal DNA sequences. Canadian Journal of Botany 85, 873–882

Descals E, Nawawi A, Webster J (1976) Developmental studies in Actinospora and three similar aquatic hyphomycetes. Transactions of the British Mycological Society 67, 207–222

Dong, W., Wang, B., Hyde, K.D., McKenzie, E.H.C., Bhat, D.J et al. (2020) Freshwater Dothideomycetes. Fungal Diversity

Ferrer A, Sivichai S, Shearer CA (2007) Megalohypha, a new genus in the Jahnulales from aquatic habitats in the tropics. Mycologia 99, 456–460

Goos RD, Brooks RD, Lamore BJ (1977) An undescribed hyphomycete from wood submerged in a Rhode Island stream. Mycologia 69,280–286

Inderbitzin P, Landvik S, Abdel-Wahab MA, Berbee ML (2001) Aliquandostipitaceae, a new Crous family for two new tropical ascomycetes with unusually wide hyphae and dimorphic ascomata. American Journal of Botany 88, 52–61

Kirschstein W (1936) Beitra¨ge zur Kenntnis der Ascomyceten und ihrer Nebenformen besonders aus der Mark Brandenburg und dem Bayerischen Walde. Annales Mycologici 34, 180–210

Suetrong S, Boonyuen N, Pang KL, Ueapattanakit J et al. (2011) A taxonomic revision and phylogenetic reconstruction of the Jahnulales (Dothideomycetes), and the new family Manglicolaceae. Fungal Diversity 51,163–188

Tubaki K (1958) Studies on the Japanese hyphomycetes. V. Leaf & stem group with a discussion of the classification of the hyphomycetes and their perfect stages. The Journal of the Hattori Botanical Laboratory 20, 142–244

Wijayawardene NN, Hyde KD, Lumbsch HT, Liu JK et al. (2018) Outline of Ascomycota: 2017. Fungal Diversity 88, 167–263

 

Recent Genus

1
Neochlamydotubeufia
Neohelicomyces

Recent Species

Neohelicomyces submersus
Neohelicomyces hyalosporus
Neohelicomyces grandisporus