Helotiaceae 



45 



Tribe 1. Sclerotineae. Apothecia arising from a definite 

 sclerotium of variable form, usually on or in the tissues of a 

 living or recently killed host (more rarely isolated or in one case 

 formed on the dung of animals) or from a stromatized portion 

 of the host; conidial stage present and well developed, or un- 

 known; apothecia cup-shaped to subdiscoid, or more rarely 

 verpoid, usually stipitate, the length of the stem variable; asci 

 usually 4-8-spored; spores ellipsoid, hyaline or subhyaline, or 

 occasionally brown; spermatia often present. 



The following genera have been adopted from H. H. \\'hetzel 

 who spent many years in critical research on this group of fungi, 

 the results of which were posthumously published by Dr. H. M. 

 Fitzpatrick (Mycologia 37: 648-714. 1945). 



1. monilinia. 



2. Seaverinia. 



3. Streptotinia. 



4. botryotinia. 



5. Septotinia. 



6. ovulinia. 



7. 



Lambertella. 

 Martinia. 



Conidial stage present, well developed. 

 Conidial stage monilioid or botryoid. 



Conidial stage a Monilia; on woody plants. 

 Conidal stage of the Botrytis type. 

 Conidiospores rough. 

 Conidiospores smooth. 



Conidiophores twisted or kinked. 

 Conidiophores not twisted or kinked. 

 Conidial stage not monilioid or botryoid. 

 Conidial stage a Gloeosporium. 

 Conidial stage not a Gloeosporium, conidia 

 large-ovoid. 

 Conidial stage absent, unknown or obscure. 

 Ascospores brown. 



Sclerotia indefinite or diffused. 

 Sclerotia definite, hemispherical. 

 Ascospores hyaline or subhyaline. 

 On plant tissues. 



Sclerotia discoid or subdiscoid, foliicolous. 

 Apothecia cup-or saucer-shaped. 

 Apothecia verpoid. 

 Sclerotia not discoid or subdiscoid. 



Sclerotia definite, isolated or associated 



with the host. 

 Sclerotia indefinite on or within the host. 

 In flowers or fruit of the host. 

 On stems or other host tissues. 

 On dung of animals. 



Tribe 2. Helotieae. Apothecia stipitate, or sessile, usually 

 highly colored, bright->ellow, light-brown, blue, or some shade 

 of green or rarely dark-colored, brownish-black, regular or 

 irregular in form; stem very variable in length even in the same 



