910 SALMON: ERYSIPHACEAE 
PLATE II 
Penicillate cells of the perithecium of Phyllactinia corylea (Pers.) Karst., from 
examples from different parts of the world. 
Fic. 1. On Quercus, from the United States (Herb. Kew). 
Fics. 2-5. On Catalpa syringaefolia from South Carolina, U. S. A. (Roumeg. 
Fung. select. exsicc. no. 4756, in herb. Kew). 
Fic. 6. On Corylus Americana, from Illinois, U. S. A. (Herb. Kew). 
Fic. 7. On Corylus Avellana, from Surrey, England. 
Fic. 8. On Corylus Colurna, from Copenhagen, (Herb. Kew). 
Fics. 9, 10. On Betula alba, from Germany (Herb. Kew). 
Fic. 11. On Alnus sp. from Germany (Fckl. Fung. Rhen., no. 704, in herb. 
Kew). 
Fics. 12, 13. On Alnus glutinosa, from France (Herb. Kew). 
Fic. 14. On Cornus Mas, from Italy (Sacc, Myc. Ven. no. 625, in herb. Kew). 
Fics. 15, 16. On Paulownia imperialis, from Japan (Herb. Kew). 
Fics. 17, 19. On Magnolia Yulan, from Japan (Herb. Kew). 
Fics. 20, 21. Bulbous base of an appendage of P. corylea ; 20, in a turgescent 
condition ; 21, on loss of turgescence, X 300 (from the drawing given by Neger (54, 
eee e 
Fic 22. Ascospores from an example of Podosphaera oxyacanthae (DC.) de 
Bary, on Crataegus Oxyacantha, from Italy. The figures are copied from drawings 
made by Dr, Spegazzini on the specimen in his herbarium (see p. 84). 
(To be concluded. ) 
