Corticiales » Corticiaceae » Giulia

Giulia tenuis

Giulia tenuis (Sacc.) Tassi ex Sacc. & D. Sacc., Syll. fung. 18: 435 (1906) 

Saprobic on dead stems of Lepidium graminifolium. Sexual morph: undetermined. Asexual morph: Conidiomata 150–250 diam., 150–200 µm high, dark brown to black, pycnidial, solitary to gregarious, subepidermal in origin, deeply immersed, ellipsoid, with a globose to subglobose venter and a lateral, elongated, curved neck, unilocular, glabrous, thick-walled, ostiolate. Ostiole 100–140 × 30–70 µm, single, subcylindrical, laterally located. Conidiomatal wall 20–40 µm wide, composed of thick-walled, dark brown to pale brown cells of textura angularis in the outer layers, and thick-walled, hyaline cells of textura primatica in the inner layers. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, phialidic, ampulliform to conical, smooth-walled. Conidia 11–24 × 4–8 µm ( = 18 × 5 µm; n = 30), hyaline, cylindrical, rounded at apex, blunt and truncate at base, straight or slightly curved, aseptate, smooth-walled, bearing 3–7 flexuous, unbranched, tubular, apical appendage (10–20 µm long).

 

Material examined: Italy, Padua, on dead stems of Lepidium graminifolium (Brassicaceae), September 1879, P.A. Saccardo (DAOM 130457, ex-type slides).

 

Giulia tenuis (DAOM 130457, ex type slides, h redrawn from Pirozynsk and and Shoemaker 1971, Morgan-Jones 1974) a–c Herbarium package and slides. d–e Vertical section of conidiomata. f Conidiomatal wall. g–h Conidiophores, conidiogenous cells and developing conidia (h re-drawn from Morgan-Jones et al. 1972). i–m Conidia. Scale bars d–e = 100 µm, f = 20 µm, h–m = 10 µm.

 

References:

 

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.

 

 

 

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