Abstract:
Bactrodesmiastrum monilioides sp. nov. is described
and illustrated from the twig of an unidentified plant
collected in Spain. This fungus is characterized by
sporodochial conidiomata with moniliform conidiophores,
its conidia being solitary, broadly navicular to obovoid,
mostly 2-septate, dark brown, with a black band at the septa
and basal cell pale brown to brown. Analysis of the ITS region
and D1/D2 domains of the LSU of rDNA sequences confirms
the placement of this fungus in Bactrodesmiastrum
(Sordariomycetes). Because the genus Bactrodesmiastrum
was originally characterized by solitary or aggregated
conidiophores reduced to a single brown monoblastic
conidiogenous cell, an emended description of the genus is
provided to accommodate the novel species. A key to species
of Bactrodesmiastrum is provided.
