HYPOXYLON POLIOSUM (ELLIS & EVERH.) P. MARTINThis name does not belong to Ascovirgaria, Biscogniauxia, Creosphaeria, Daldinia, Discoxylaria, Entoleuca, Hypoxylon, Jumillera, Kretzschmaria, Kretzschmariella, Nemania, Stilbohypoxylon, Vivantia, or Whalleya.
(The accepted or suggested disposition is indicated by an asterisk (*), if there is any.)
Hypoxylon poliosum (Ellis & Everh.) P. Martin, J. S. African Bot. 33: 319. 1967; [nom. inval., ICBN Art. 33.2]; J. S. African Bot. 42: 73. 1976.
º Rosellinia poliosa Ellis & Everh., Bull. Torrey Bot. Club 22: 439. 1895.
MEXICO: Monterey, 6.1895, Egeling, B.F.F.G. 50; 7.1895, Egeling, B.F.F.G. 60, decaying post (NY, SYNTYPES of Rosellinia poliosa).
This fungus has recently been redescribed and illustrated by Petrini (1993). It should be noted further that ascospores of this fungus are two-celled. However, the septum is entirely opaque in the mature ascospores owing to a broad, dark transverse band formed at the middle region. Asci were not found. This fungus is definitely not xylariaceous, but its taxonomic position remains uncertain until adequate material is available for studies.