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248 MICROSCOPIC FUNGI. 



Plate tig. 



V. 87. Sporesof Foetid smut in germination x highly. 

 „ 88. Sporidia of the first order borne on the germinating 



tubes of the foetid smut {Tilletia caries) x highly. 

 „ 89. Sporidia of the first order, showing their transverse 



connection, x highly. 

 „ 90. Sporidia of the first order, producing sporidia of the 



second order, x highly. 



91. Sporidium of the second order in active germination. 



92. Deformed flower-head of Goatsbeard infested with 

 smut {Ustilago receptaculorum). 



93. Eloret removed, sprinkled with spores of the smut, 

 enlarged. 



94. Spores of Goatsbeard smut {Ustilago receptaculorum) 

 x 460. 



The same in active germination x 460 (Tulasne). 

 Beaksedge {Rhyncospora alba) with its smut {Ustilago 



Montagnei). 

 Spores of Ustilago Montagnei x 460. 

 Ear of Barley infected with smut {Ustilago segetum). 

 Spores of Cora-smut [Ustilago segetum) x 460. 

 Grass with its smut {Ustilago hypodytes). 

 Spores of Grass-smut {Ustilago hypodytes). 

 flowers of Bladder-campion with anther-smut {Usti- 

 lago antherarum). 

 Anther distorted by smut {Ustilago antherarum) . 

 Spores of Anther smut {Ustilago antherarum) x 460. 

 Portion of leaf of water grass with Elongated smut 



{Ustilago longissima). 

 Pustule of same, enlarged. 

 Spores of Elongated smut {Ustilago longissima) x very 



highly. 

 Spores of Maize smut {Ustilago maydis) x 460. 

 Sedge {Carex recurva) with Sedge smut {Ustilago urceo- 



lorum). 

 Single fruit covered with the smut. 

 Spores of Sedge smut ( Ustilago urceolorum) x 460. 

 Blower of Polygonum persicaria distorted by Utricle 



s m ut ( Ustilago utriculosa) . 

 Section of the same {Tulasne). 

 Inflorescence of Polygonum hydropiper with Utricle 



smut {Ustilago utriculosa). 

 Section of infected flower of Polygonum hydropiper. 

 Spores of Utricle smut {Ustilago utriculosa) x 460. 

 Leaf of Cocksfoot grass with smut {Ustilago Salveii). 

 Portion of leaf, showing pustules, x slightly. 

 Spores of Cocksfoot smut (Ustilago Salveii) x 320. 

 Grass* stem with Banded smut {Ustilago grammica). 



