4 (3) Conidia produced exogenously on conidiophores ^ 



5 (4) Conidia 2-celled, rarely 3-celled Diplodia oraemaris /^**ia/ [••■s. 



l-AV'v 



5 (4) Conidia single-celled 6 



6 (5) Conidia ellipsoidal to bacilliform under 7.5 p Phoma(p.46) 



6 (5) Conidiaovatetoelongate, over 15/j long Macrophoma (p.45} /•••>--'--/ /•\- 



/' • • ' • .• /•• 



7 (2) Conidia 1- or 2-celled 8 



7 (2) Conidia 2- to 12-celled, or muriform 15 



8 (7) Conidia catenulate or clustered 9 



8 (7) Conidia produced individually on conidiophores or in phialides 14 



9 (8) Conidia clustered on common basal cells 10 



9 {8) Conidia catenulate or clustered on individual conidiophores 12 



33 



