Ascomycota, genera » Ascomycota, incertae sedis » Neottiospora

Neottiospora caricina

Neottiospora caricina (Desm.) Höhn., in Weese, Mitt. bot. Inst. tech. Hochsch. Wien 1(3): 78 (1924)

Facesoffungi number: FoF 07521

 

Foliicolous. Sexual morph: undetermined. Asexual morph: Conidiomata 110310 diam., 120270 µm high, olivaceous green to black, pycnidial, scattered to gregarious or confluent, subepidermal in origin, deeply immersed, ellipsoidal to globose, unilocular, glabrous, thick-walled, ostiole absent, but with a circular operculum, dehiscence by forming two lines between the operculum and upper conidiomatal wall. Conidiomatal wall 1025 µm wide, composed of thick-walled, olivaceous green to hyaline cells of textura angularis to textura prismatica at lateral and basal part, becoming relatively thick-walled, pale olivaceous green to hyaline cells of compact textura angularis at upper part. Conidiophores arising all around cavity of conidiomata, hyaline, cylindrical, branched, septate, smooth-walled. Conidiogenous cells 1020 × 23 µm, hyaline, enteroblastic, phialidic, clavate to subcylindrical, discrete or integrated, indeterminate, with periclinal thickenings at collarette zone, smooth-walled. Conidia 9–15 × 35 µm ( = 13 × 4 µm; n = 30), hyaline, fusiform to ellipsoidal, with an acute apex and a slightly truncate base, straight or slightly curved, aseptate, smooth-walled, guttulate, bearing an appendage at base, initially funnel-shaped but ultimately splitting into tentacular strands.

 

Material examined: on leaves of Carex pendula Huds. and C. riparia (R. Br.) Poir. (Cyperaceae), J.B. Mougeot, C. Nestler & W.P. Schimper - Stirpes Cryptogamae Vogeso-Rhenanae, Fasc. August 1850, (DAOM 59000); Austria, Wienerwald, Georgenberg nr. Purkersdorf, on leaves of Carex pendula, C. Keissler, (DAOM 81836); Canada, Ontario, Lanark County, Christie Lake, on leaves of Carex sp., 25 September 1965, R.A. Shoemaker, (DAOM 110354); cultivated on sterilized grass in agar at room temperature in light (21 October 1965 7 December 1965) (DAOM 110354).

 

Neottiospora caricina (DAOM 59000) a, b Herbarium package and specimen. c–e Appearance of olivaceous green to black conidiomata on the host. f, g Vertical sections of conidiomata (g from DAOM 81836). h–j Conidiomatal wall (j from DAOM 81836). k–n Conidiophores, conidiogenous cells and developing conidia. o–u Conidia. Scale bars c = 500 µm, d = 200 µm, e–g = 100 µm, h, j = 20 µm, i = 50 µm, k–n = 10 µm, o–u = 5 µm.