s for Presentations a t the 1993 Annual Meetinq o f the Mycological Society of America Abstracts o f all symposium presentations, posters, and special lectures are noted as such a t the start o f eaeh abstract. Contributed oral resentations are not specifically marked a t the start o f each abstract except with the day an 8 time o f presentation.s o f all symposium presentations, posters, and s...