Catabotryales » Catabotrydaceae » Catabotrys

Catabotrys deciduum

Catabotrys deciduum

(Berk. & Broome) Seaver & Waterston Mycologia 38(2): 184 (1946)

 

Classification: Ascomycota-Pezizomycotina-Sordariomycetes- incertae sedis-Catabotryales-Catabotrydaceae-Catabotrys

 

Host species: Elaeis guineensis, Rhizophora mucronate, Salacca sp.

 

Holotype: K(M) 35063

 

Known distribution: India; Panama; Thailand (Trat Province)

 

IF Number: IF626984      Mycobank Number: 626984      FOF Number: FoF05088

 

Description

Sexual morph: Stromata solitary or irregularly scattered, conspicuous, multi-loculate, superficial, with base slightly penetrating the epidermis at regular intervals, discoid to pulvinate, reddish brown to black, surface scurfy, flat or slightly convex. Ascomata deeply imbedded in stromatic columns, globose, with a long, periphysate, ostiolar neck. Peridium composed of several reddish-brown outer layer cells of textura globosa and textura epidermoidea, with pale brown to hyaline internal cells of textura angularis. Paraphyses 5–6.5 µm wide, hypha-like, numerous, tapering towards the apex, not embedded in a gelatinous matrix. Asci 56.5–66 × 7.3–9.5 μm (x̅ = 60.4 × 8.8 μm, n = 20), 8-spored, unitunicate, broad cylindrical, short pedicellate, apically rounded or truncate, with a J-, discoid, refractive, apical ring. Ascospores 7.5–9.7 × 3–4.5 μm (x̅ = 8.6 × 3.8 μm, n = 30), bi-seriate, hyaline, 1-celled, ellipsoidal to cylindrical, smooth-walled. Asexual morph: Hyphomycetous. Vegetative hyphae hyaline, septate, smooth-walled. Conidiophores micronematous. Conidiogenous cells holoblastic, terminal and intercalary. Conidia 3.5–7 × 3–7 μm (x̅ = 5.3 × 4.7 μm, n = 80), globose or obovoid, hyaline, 1-celled and smooth-walled, often with denticles from conidiogenous cells.

 

 

Culture conditions: Colonies on PDA, 20 mm diameter after 21 days at 25°C.

 

 

 

 

 

Catabotrys deciduum (MFLU 18-1073, new geographical record). a, b Appearance of stromata on host surface. c, d Vertical sections through the stromata. e, f Structure of peridium. g Ostiole with periphyses. h Colonies on PDA. i Paraphyses. j–m Asci. l Ascus in Cotton blue. m Ascus apex in Mealzer’s reagent, J- subapical ring. n–q Ascospores. r–u Sporulation in culture. t, u Conidia in culture. Sacle bars: a, b = 2 mm, c, d = 1000 μm, e, f = 50 μm, g–m = 20 μm, r, s = 10 μm, r, n–q, t, u = 5 μm.

 

 

Reference

Chethana, K.W.T. et al. (2021) AJOM new records and collections of fungi: 101–150. Asian Journal of Mycology 4(1), 113–260

 

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