210 The Fungi of Wiltshire. 



Genus CLXVIII., JJstilago Lk. Plant deeply seated. Spores 

 simple, springing from delicate threads, or produced in the form 

 of closely packed cells, which alternately break up into a powdery 

 mass. 



TJstilago segetum Dittm., on seeds of cereals, &c. 



Genus CLXIX., Tuburcinia Fr. Plant deeply seated. Spores 

 multicellular, subglobose, or conchiform. 



ORDER XVI. CGEOMACEI. 



Genus CLXX., Rcestelia Reb. Peridium elongated, the compo- 

 nent cells at length separating, or lacerated. 



Genus CLXXI., Peridermium Chev. Peridium elongated, at 

 length ruptured irregularly. 



Genus CLXXII., (Ecidium P. Peridium rarely elongated, 

 opening by radiating reflected teeth, or very short, and bursting 

 irregularly. Spores concatenate. 



CEcidium allii Grev., on allium ursinum. 



ari Rudolphi, on arum maculatum. 



compositarum Mart., on various compositoe. 



ranunculacearum P., on ranunculus ficaria. 



rubellatum Rabenh., on docks. 



euphorbioe P., on spurge. 



■ — urticarum Schum., on nettles. 



crassum P., on buckthorn, Chippenham. 



Genus CLXXIII., Endophyllum Liv. Peridium inclosed in the 

 leaf, bursting irregularly. 



Family IV. Hyphomycetes. 



Isariacei. Stem or stroma compound, spores dry, 



volatile. 



s ( ii 



2 \ ^-a 





Stilbacei. Receptacle subglobose, stem or stroma 



compound. Mass of spores moist, 



2 V diffluent. 



