BISCOGNIAUXIA-ANCEPS COMB-NOV AND VIVANTIA-GUADALUPENSIS GEN-ET-SP-NOV

Biscogniauxia anceps infrequently produces the ascospore type expected of such fungi, namely an unequally bicelled spore with a large dark-w alled cell and a smaller hyaline appendage cell. The predominant ascos pore type features two unequal hyaline cells. Both hyaline cells germi nate readily. Vivantia guadalupensis produces bicelled ascospores that remain permanently hyaline. Both fungi produce Nodulisporium anamorph s in culture. The implications of these findings in regard to taxonomi c concepts in the Xylariaceae are discussed.