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Article VI. — Parasitic Fungi of Illinois. Part II. By T. 

 J. Burrill and F. S. Earle. 



ERYSIPHE.E, Lev. 



(Ann. Sci. Nat., Ser. III., Tome XV.) 



On living plants. Mycelium superficial, consisting of 



numerous branching, septate, usually white, much interwoven 



breads, which extend widely over the epidermis of the host, 



-~on« of haustoria; conidia simple, color- 



-i^ttp the other. 



ERRATA. 



Pa ge 389, Ij ne » . 

 ca rp; lines 9 12 % I b ° ttoai > for earnn ■ 



Will be v,^ . 



tend over the leaf in every ^.. . . 



interlacing. These threads are usually presseu cn^ 



host, but they do not themselves enter it.* They send out at 



intervals, however, short special branches called haustoria, that 



* It is held by some writers that in Sphxroiheca pannosa, Lev., the 

 mycelium does sometimes enter the tissues of the host, but this is not 

 satisfactorily proven. 

 1 







