Fungalpedia – Note 807, Rhytidospora
Rhytidospora Jeng & Cain
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Ceratostomataceae, Melanosporales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Coprophilous. Sexual morph: Ascomata solitary, superficial, globose, without an external opening, yellow to pale orange, membranaceous, translucent, glabrous or hairy. Peridium cephalothecoid, irregularly polygonous pattern on surface view, membranaceous, outer layer composed of yellow to pale orange cells of textura angularis; inner layer composed of hyaline cells of textura prismatica. Paraphyses absent. Asci 2-, 4- or 8-spored, unitunicate, subglobose to clavate, evanescent. Ascospores hyaline becoming dark brown or olivaceous brown, broadly fusiform to ellipsoidal, aseptate, verrucose to tuberculate to wrinkled, sometimes with pits on surface, with germ pore at each end and a large guttule. Asexual morph: Undetermined (adapted from Jeng & Cain 1977, Krug & Jeng 1979, Valldosera & Guarro 1994).
Notes – Rhytidospora was established by Jeng & Cain (1977) and typified by Rhytidospora tetraspora. It is characterized by translucent, glabrous ascomata and broadly fusiform ascospores with wrinkled or pitted surface (Jeng & Cain 1977, Krug & Jeng 1979, Valldosera & Guarro 1994). These characters were considered similar to Melanospora (Jeng & Cain 1977), and we found that they are also similar to Neurospora and Sordaria. However, molecular data for this genus is lacking.
Type species: Rhytidospora tetraspora Jeng & Cain, Mycotaxon 5(1): 279 (1977).
Other accepted species: Species Fungorum – search Rhytidospora.
Figure 1 – Rhytidospora tetraspora: a–b, d–g, i–o (TRTC-052086, holotype); c, h, p–q (UPS-UPS:BOT:F-132032). a–c Superficial ascomata on the host. d Ascoma cross section. e Peridium surface view. f–g Asci. h–q Ascospores (p arrow indicates germ pore). Scale bars: a–b = 200 µm, c–e = 100 µm, f = 20 µm, g–h, p–q = 10 µm, i–o = 5 µm.
References
Krug JC, Jeng RS. 1979 – Rhytidospora and Pteridiosperma, gen. nov. (Melanosporaceae). Mycotaxon 10(1), 41–45.
Valldosera M, Guarro J. 1994 – Two new coprophilous ascomycetes from South America. Nova Hedwigia 58(3–4), 447–451.
Entry by
Shi-Ke Huang, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China, The Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou Province, 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, The Mushroom Research Centre, Guizhou University, Guiyang 550025, China
Published online 14 September 2021