USTILAGINACEAE 101 



Dictyosporae 



Teleutospores septate in two directions, or muriform 



I. Teleutospores more or less radiately 3-septate 



Triphragmium 7 : 768 

 (incl. Hapalophragmium 16: 1121) 



II. Teleutospores radiately 4-many-septate or muriform 



Ravenelia 7: 770 



(incl. Sphaerophragmium 11 : 209, 

 Alveolaria 11:212, Hemileiop- 

 sis 16:269, Anthomyces 16:325, 

 Pleoravenelia and Neoravene- 

 lia, 17:407) 



Family 59. USTILAGINACEAE 



7:449, 9:282, 11:230, 14:410, 16:367, 17:47-? 



Mycelium growing widely through parts of living plants, chiefly flowers and 

 fruits, finally disappearing, leaving the mass of spores ; spores producing upon 

 germination a promycelium upon which sporidioles are borne. 



Amerosporae 



Spores i-celled 



I. Sori without a fungal involucre 



1. Sporidioles typically pleurogenous on the promycelium 



a. Spores arising from a compact subgelatinous stroma 



Cintractia 7: 480 



b. Spores not arising from a compact subgelatinous stroma 



Ustilago 7:451 



(incl. Anthracoidea 14:420) 



2. Sporidioles many, acrogenous, crowning the promycelium 



a. Sori powdery at maturity 



(1) Sporidioles many, in a capitulum Neovossia 16:375 

 (2) Sporidioles not in a capitulum Tilletia 7: 481 



b. Sori not powdery at maturity 



(1) Spores catenate, then separating Sirentyloma 14:425 



(2) Spores not catenate 



(a) Spores rostrate Rhamphospora 9:287 



(b) Spores not rostrate 

 x. In stems and leaves 



(x) Sori pustulate, pale or rust-brown 



Entyloma 7: 487 



(y) Sori explanate, widely expanded, black 



Melanotaenium 7:496 

 y. In roots 



(x) Spores conglobate in spheroid cysts 



Oedomyces 11:234 



(y) Spores not conglobate Entorrhiza 7:497 



