ENTYLOMA. 



313 



Still to mention are : 



E. Ellissi Halst., known as "white smut."^ It inhabits spinach 

 {Spinacia oleracea), discolouring the leaves. 



E. ossifragi Eostr. on Narthedum osdfragwm in Denmark. 

 E. catenulatum Bostr. on Aira caespitosa in Denmark. 



Fig. 169. — Entylonia Aic}iers<mii. Germin- 

 ated spore with septate promycelium ; one 

 promycelial branch remains rudimentary, 

 the other (to left) has produced two branches, 

 one of which has elongated and bears a coni- 

 dium. (After Woronin.) 



Fig. nO.—Bntyloma Magnudi. Germin- 

 ated spores ; the promycelium of one shows 

 a whorl of three branches with apices 

 elongating to form germ-tubes ; the other 

 shows two, out of three, germ-tubes giving 

 off branched sporidia (conidia). (After 

 Woronin.) 



E. leproidum Trab.^ [Oedomyces leproides (Saco.)]. Diseased beet-root 

 exhibits irregular outgrowths, which enclose spaces filled with the brown 

 spore-powder of this fungus. 



E. nympheae (Cunningham) Setch.^ on various species of Nymphea in 

 America, Africa, and Europe. 



Melanotaenium.^ 



Spores unicellular in patches on an intercellular mycelium 

 lying deep in the host-plant; they have a thick dark brown 



1 Halsted, New Jersey Agric. Exper. Station Bulletin, No. 70, 1890. 

 ^Trabut, " Sur une Ustilaginee parasite de la Betterave." Oompt. rend. 

 cxviii., 1894. 

 ' Setchell, Botanical Gazette, 1894, p. 188 (with illustrations). 

 * Schroeter, Kryptogam. Flora v. Schlesien. Woronin, Senckenherg Gesell, 1880. 



