LEUCONECTRIA-CLUSIAE GEN-NOV AND ITS ANAMORPH GLIOCEPHALOTRICHIUM-BULBILIUM WITH NOTES ON PSEUDONECTRIA

A new genus in the Hypocreales, Leuconectria, is described for Pseudon ectria clusiae based on its unique perithecial wall anatomy and the an amorph Gliocephalotrichum bulbilium produced from single ascospores of L. clusiae. The teleomorph had previously been placed in Pseudonectri a, a genus defined for Nectria-like species with nonseptate ascospores . Pseudonectria is redefined based on the type species P. rousseliana and its anamorph Volutella buxi. Pseudonectria rousseliana causes a di sease of boxwood (Buxus sempervirens) in the Buxaceae. The two other s pecies included in Pseudonectria, P. coronata and P. pachysandricola, also occur on members of the Buxaceae. All three species are described and illustrated, and a key to species is provided.