Pestalozziella artocarpi Nag Raj & W.B. Kendr., Can. J. Bot. 50(3): 609 (1972)
Facesoffungi number: FoF 07488
Saprobic on dead, rotting leaves of Artocarpus integrifolia (Moraceae). Sexual morph: undetermined. Asexual morph: Conidiomata 200–400 diam., 150–250 µm high, off-white, pearl white when moist but brown when dry, amphigenous, stromatic, pycnidial, solitary to gregarious or confluent, subepidermal, initially immersed, ultimately erumpent, subglobose to irregular, unilocular, glabrous, thick-walled, ostiolate. Ostiole single, cylindrical to circular, centrally located. Conidiomatal wall 9–20 µm wide, composed of thick-walled, pale brown cells of textura intricata on the exterior, gradually merging with hyaline cells of textura prismatica in outer layers. Conidiophores formed from the inmost wall layers of conidiomata, hyaline, cylindrical to subcylindrical, irregularly branched, broader at base, septate, smooth-walled, invested in mucus. Conidiogenous cells 28–40 × 1.5–3 µm, hyaline, enteroblastic, cylindrical, discrete or integrated, indeterminte. Conidia 19–27 × 3–5 µm ( = 21 × 4 µm; n = 30), hyaline, narrow cylindrical, with a rounded apex and a narrow truncate base, straight or slightly curved, unicellular, smooth-walled, bearing apical appendages; appendages 21–37 × 1–3 µm including the length prior to branching, branches 2–4, attenuated, divergent, tubular, flexuous.
Material examined: India, Bangalore, Hebbal, on dead, rotting leaves of Artocarpus integrifolia (Moraceae), 24 July 1967, T.R. Nag Raj (DAOM 134442, holotype).
Notes: The conidiogenous cells of Pestalozziella artocarpi were illustrated as holoblastic, sympodial, cylindrical to subcylindrical, with many, unthickened conidiogenous loci (Sutton 1980). However, the holoblastic, sympodial conidiogenous cells were not described or shown in the illustration of P. artocarpi (Nag Raj 1993).
Pestalozziella artocarpi (DAOM 134442, holotype) a, b Herbarium package and specimen. c–d Appearance of brown conidiomata on the host. e, f Vertical sections of conidiomata. g, h Conidiomatal wall. i–k Conidiophores, conidiogenous cells and developing conidia. l–o Conidia. Scale bars c = 500 µm, d–f = 100 µm, g–h = 20 µm, i–j = 20 µm, k= 5 µm, l–o = 10 µm.
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.