Rosellinia nectrioides



Rosellinia nectrioides Rehm..

Rosellinia nectrioides is similar to R. subsimilis and R. abscondita in stromatal shape, evanescent subiculum, large light brown ascospores and alpine distribution. It differs from the former by ascospores lacking cellular appendages, and from the latter by ascospores with parallel sidewalls in face view.

Rosellinia nectrioides also may be confused with R. britannica, owing to their similar ascospores. Rosellinia nectrioides differs from the latter in having larger and frequently flat-topped stromata, paler ascospores and a distribution restricted to alpine areas (Petrini et al.,1989). It is reported to grow either on herbaceous or woody substrates, in alpine and subalpine areas of Europe ( Finland, Norway, Sweden, Switzerland and Russia) and North America ( Canada) (Petrini et al.,1989).

Like R. abscondita, one of the other taxa restricted to alpine regions, R. nectrioides is still unknown from the Pyrénées.