THECAPHORA. 325 



Th. Westendorpii Fisch. In Lolium perenne in Belgium. 



Th. pimpinellae Juel. In fruits of Pimpinella Saxifraga in Sweden. 



Th. aurantiaca Fingh. In leaves of Urtica dioica. 



Th. pallescens Fingh. In leaves of Fragaria collina. 



Sorosporium. 



Spore-formation takes place in a mass of twisted gelatinous 

 hyphae. Spores at first embedded in a gelatinous investment 

 and united into packets, but later becoming separate. Promy- 

 celium filiform and septate. 



Sorosporium saponariae Eud. This causes deformation of 

 flowers of Dianihns deltoides, SapoTMria officinalis, Silene inflata, 

 and S. velutina, Stellaria Holosteum, Cerastium arvense, Lychnis 

 dioica, and DiantMis prolifer. 



S. dianthi Eabh, on Dianthus prolifer, is probably identical with the 

 preceding species. 



We append here as doubtful Ustilagineae, the genera GrapMola 

 Schinzia {Enter rhiza), Tuberculina, and Schroeteria. 



Graphiola. 



The sporocarps of this genus are formed on the surface of 

 plant-organs containing mycelium ; they are little spherical 

 structures enclosed in a peridium, and contain filamentous 

 septate hyphae. The hyphae may be sterile or fertile ; the 

 spores are produced on lateral cells of the fertile hyphae. 

 From the germinating spores, either a thread-like mycelium or 

 spindle-shaped conidia arise. 



Graphiola phoenicis Pait.^ (Britain.) This fungus is a 

 parasite on leaves of palms {e.g. Phoenix dactylifera and 

 Chamerops humilis) in the open in Italy and other Mediter- 

 ranean countries, in hot-houses elsewhere. The sporocarps make 

 their appearance as little black protuberances on both sides of 

 the leaf. The mycelium forms a close hyphal tissue, which 

 encloses and kills parenchymatous cells, displaces the bundles 

 of sclerenchyma, and ruptures epidermis and hypoderm. De- 

 formation is, however, localized to these spots. 



^ Ed. Fischer, " Beitrag z. Kenntniss d. Gattung Graphiola," Botan. Zeitung, 

 1883. 



