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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.
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