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 Add this item to the list  Bionectria pityrodes (Mont.) Schroers
   
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Page number:148 
Description type:Culture description 
Description:Bionectria pityrodes (Mont.) Schroers
Description from culture: Colonies reaching 30-40 mm diam in 7 d at 24ºC; optimum for growth 21-27°C (40 mm diam), maximum 33°C. Colony reverse not pigmented or somewhat orange under UV-light, with time becoming olive-grey (2E2) to olive (3E3). Colony surface on CMD with little aerial mycelium, almost smooth; on OA within 21 d finely to coarsely granular because of sporodochia or fluffy cottony if conidiophores or sporodochia arise within aerial mycelium; on PDA similar, but with more aerial mycelium. Sporodochia formed on a stroma or from aerial mycelium, up to 100 µm diam, in older colonies and particularly if formed on a stroma more than 2 mm diam, frequently cupulate with a palisade of marginal hyphae/conidiophores extending beyond the sporodochial hymenium. Stroma, if formed, orange, KOH-, oval to flat, up to 1.5 mm diam, originating from under the agar surface of older OA cultures. Conidiophores monomorphic, sporodochial, in young aggregates divergently branched, in sporodochia adpressed throughout, often anastomosing, irregularly penicillate, quinquies-verticillate or more. Phialides in irregular whorls of 2-5, often arising from 2 levels, slightly, widening towards the apex or straight, narrowing below the tip, without visible collarette (5.8-)13-14.4-16.4(-19.6) µm long, (1.4-)1.8-2-2.2(-3.2) µm wide at base, (1.6-)2.2-2.4-2.4(-3) µm wide subapically, the aperture generally less than 1.5 µm wide (n = 68). Conidia greenish hyaline to pale green, smooth, symmetrical (homopolar-polysymmetrical), oval, (4.8-) 5.8-6.6-7.2(-9.0) — (2.4-)2.8-3-3.4(-4) µm (n = 129); hilum not or hardly recognizable, median; conidial chains linear, not imbricate, initially dry, with time sliming down into olive masses; in young sporodochia chains from neighbouring phialides frequently aggregated, columnar; columns from different conidiophores slightly separated from each other; colour of conidial masses, dark green (29F4) in vivo, in water and also in lactic acid, brownish in KOH.
 
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