254 CLASS ASCOMYCETEAE 



Apothecia arising from a tuberoid sclerotium that was formed on the 

 aerial mycelium or in cavities of the host. No conidia known. 



Sderotinia 

 Apothecia arising from a thin effuse, subcuticular sclerotium sur- 

 rounding the affected portion of the host. Small black micro- 

 sclerotia also formed on the aerial mycelium. No conidia 

 known. Stromatinia 



Stroma formed in the tissues of the host which it digests and replaces 

 by the dense sclerotial tissues, except for the remnants of the 

 host tissues. No conidia known. 

 Sclerotium of the discoid type, foliicolous. 

 Apothecia cupulate or saucer-shaped. 



Ciborinia 

 Apothecia verpoid (i.e., curved downward at the apex of the 

 stalk) . Verpatinia 



Stroma destroying the male or female flowers and forming a 

 sclerotium. Ciboria 



Stroma developing in the infected fruits of the hosts, of the hollow 

 spheroid type or pseudosclerotial. Conidial stage of the Monilia 

 type. Monilinia 



Stroma a typical plano-convex sclerotium formed on or just beneath 

 the cuticle or epidermis and firmly attached to it. Conidial 

 stage of the Botrytis type, ascospores hyaline. 

 Conidial branches not twisted. Botryotinia 



Conidial branches strikingly twisted. 



Streptotinia 

 Conidial stage unknown, ascospores olive-brown. 



"Martinia" Whetzel 

 Stroma a more or less angular sclerotium formed in the dead fallen 

 leaves of the host. 

 Conidia in clusters, elongated, 2 to 3 septate, on host leaf. 



Septotinia 

 Conidia large, obovoid, produced singly, on host leaf. 



Ovulinia 

 Stroma of the substratal type, indeterminate, not a definite scle- 

 rotium. 

 Ascospores one-celled, brown. No conidia known. 



Lambertella 

 Ascospores sometimes septate at maturity, hyaHne. No conidial 

 stage known. Stroma sometimes rudimentary or wanting. 



Rutstroemia Rehm, not Karst. 

 Ascospores hyaline, not septate. Conidial stage of the Botrytis type, 



Seaverinia 

 Spore fruits club-shaped or stalked with pileus. Asci clavate. Ascospores 

 oblong to needle-shaped, one-celled or many times trans- 

 versely septate, hyaline or brown. Conidial stages not known. 

 Saprophytic. Family Geoglossaceae" 



Clavate, the ascigerous portion more or less compressed. 

 Spores small, one-celled. Plants bright-colored. 



Mitrula 



* Vibrissea and Apostemidium, placed in this family by Durand (1908), are con- 

 sidered by Nannfeldt (1932) to belong to the Ostropaceae (see above). 



