11 (/) Ascospores surrounded by a thin or thick gelatinous sheath but without protruding appendages 



of any kind 12 



11 (i) Ascospores may lack a gelatinous sheath but possessing apical and/or equatorial appendages 13 



12 {ID Ascospores to 15 /j long, pigmented, surrounded by a 



thin gelatinous sheath Massariella maritima 



12 (11) Ascospores to 35 M long, hyaline, surrounded by an undu- 



lant, gelatinous sheath Didymosamarospora euryhalina 



-r^A 



13 (11) Ascospores provided with appendages or processes in both apical and equatorial positions 23 



13 (//) Ascospores provided with appendages or processes at either one or both apices but without 



such structures around the equator or midseptum 14 



14 ( 13) Spore appendages usually at one end only 



18 



14 (13) Spore appendages always occurring at both ends 15 



15 (14) Spores with a single appendage at each end 



20 



15 (14) Spores with 2-7 appendages at each end 



16 



16 (15) Ascospores with 2 (or a pair of) appendages at each end Halosphaeria (p. 23) 



16 (15) Ascospores with 3-7 appendages at each end 17 



18 



