Spadicoides
Spadicoides Hughes
Sexual morph: Undetermined. Asexual morph: Colonies dark, effuse, stroma absent. Conidiophores macronematous, mononematous, unbranched, occasionally with branches, erect or ascending, straight or flexuous, septate, brown, paler towards the apex. The upper three-quarters or less of the conidiophores are usually conidiogenous. Conidiogenous cells terminal or intercalary in the upper part of the conidiophore, cylindrical, with numerous small pores in the wall, conidia formed singly or in chains at the apex and laterally, conidiogenesis tretic. The number of pores per conidiogenous cell usually 5–15 causing the conidia to entirely envelope the conidiophore in a dry mass. Conidia oblong, ellipsoidal or obovoid, aseptate or several-septate, brown, borne singly or occasionally in chains at the apex and laterally in the position of pores and secede readily. Synasexual morph: A selenosporella-like is sometimes formed in vitro and in vivo. Conidiophores macronematous or semi-macronematous, mononematous, branched or unbranched, often reduced to conidiogenous cells. Conidiogenous cells discrete, terminal or intercalary, subcylindrical to flask-shaped, polyblastic, sympodially proliferating with a short terminal rachis, often arising from vegetative hyphae or directly from conidia, sometimes reduced to a few denticles. Conidia clavate, oblong or narrow fusiform, hyaline, aseptate, smooth-walled.
Type species: Spadicoides bina (Corda) S. Hughes, Can. J. Bot. 36: 806 (1958)
Notes: The genus Spadicoides was introduced by Hughes (1958) with S. bina as the type species. Goh and Hyde (1996) briefly discussed the generic concept of Spadicoides. Thirty-one Spadicoides species were revised, of which 21 species were accepted. Presently, 55 epithets are listed in Index Fungorum (December 2018), and most of the species are reported from terrestrial habitats (Subramanian and Vittal 1974; Kuthubutheen and Nawawi 1991; Wong et al. 2002; Li 2010; Xia et al. 2014; Ma et al. 2016). Seven species are known from freshwater habitats (Goh and Hyde 1996; Ho et al. 2002; Cai et al. 2004, 2006a, b, c; Zhuang 2001).
Freshwater species:
Spadicoides americana C.J.K. Wang
Spadicoides atra (Corda) S. Hughes
Spadicoides bambusicola Zhou et al.
Spadicoides cordanoides Goh & K.D. Hyde
Spadicoides hodgkissa Ho et al.
Spadicoides obovata (Cooke & Ellis) S. Hughes
References
Cai L, McKenzie EHC, Hyde KD (2004) New species of Cordana and Spadicoides from decaying bamboo culms in China. Sydowia 56:6–12
Cai L, Ji KF, Hyde KD (2006a) Variation between freshwater and terrestrial fungal communities on decaying bamboo culms. Antonie Van Leeuwenhoek 89:293–301
Cai L, Hyde KD, Tsui CKM (2006b) Genera of freshwater fungi. Fungal diversity research series, vol 18
Cai L, Jeewon R, Hyde KD (2006c) Molecular systematics of Zopfiella and allied genera: evidence from multi-gene sequence analyses. Mycol Res 110:359–368
Goh TK, Hyde KD (1996) Spadicoides cordanoides sp. nov., a new dematiaceous hyphomycete from submerged wood in Australia, with a taxonomic review of the genus. Mycologia 88:1022–1031
Ho WH, Yanna Hyde KD (2002) Two new species of Spadicoides from Brunei and Hong Kong. Mycologia 94:302–306
Hughes SJ (1958) Recisiones Hyphomycetum aliquot cum appendice de nominibus rejiviendis. Can J Bot 35:727–836
Kuthubutheen AJ, Nawawi A (1991) Two new species of Spadicoides from Malaysia. Mycol Res 95:163–168
Li DW (2010) Spadicoides subsphaerica sp. nov. from Connecticut. Mycotaxon 111:257–261
Ma J, Zhang K, Zhang XG, Castañeda-Ruíz RF (2016) Three new species of Spadicoides from Lushan Mountain, China. Mycol Prog 15:43
Subramanian CV, Vittal BPR (1974) Hyphomycetes on litter from India-I. Proc Indian Acad Sci B 80:216–221
Wong MKM, Goh TK, McKenzie EHC, Hyde KD (2002) Fungi on grasses and sedges: Paratetraploa exappendiculata gen. et sp. nov., Petrakia paracochinensis sp. nov. and Spadicoides versiseptatis sp. nov. (dematiaceous hyphomycetes). Cryptog Mycol 23:195–203
Xia JW, Ma LG, Ma J, Zhang XG (2014) Two new species of Spadicoides from southern China. Mycotaxon 126:55–60
Zhuang WY (2001) Higher fungi of tropical China. Mycotaxon Ltd, Ithaca
Recent Genus
1Neochlamydotubeufia
Neohelicomyces
Recent Species
Neohelicomyces submersusNeohelicomyces hyalosporus
Neohelicomyces grandisporus