3 (2) Ascospores with transverse septa only 4 



3 (2) Ascospores with transverse and longitudinal septations; muriform . 



DICTYOSPORAE (p. 15) 



4 {3) Ascospores 2-celled (one septation only) DIDYMOSPORAE (p. 16 



4 (3) Ascospores three- or more-celled (multiseptations) 



PHRAGMOSPORAE (p. 27) 



KEY TO GENERA AND SPECIES OF SCOLECOSPORAE 



1 Ascospores single-celled (nonseptate) 2 



1 Ascospores three- to many-celled (multiseptate) 3 



2 (1) Ascospores 50-750 /J ; provided with a conoid 



cell or appendage at each end Lulworthia medusa 



12 



