Fig. 1. Characterization of M. pinodes, A. pinodes, and P. medicaginis var. pinodella isolates by microscopic examination of perithecia and spores and by RAPD banding patterns. Figure 1A, perithecia observed in M. pinodes isolate WA31; Fig 1B, bicellular conidia observed in A. pinodes isolate WA4; Fig. 1C, small unicellular conidia observed in P. medicaginis var. pinodella isolate WA49; and Fig 1D, RAPD banding patterns produced using primers OPW04 and OPW18. Lanes designated M contain 1-kb DNA ladder markers (Life Technologies).