Ustilagineao, Amerosporae, Ustilago. 451 



li. (iermiiiatio promycelio simplici, iu parte rructifera septi.s iiullis in- 



structo; sporidiola tautum in promycelio acrogena. TilleliaceiB. 



■ Sporidioia niimerosa (raro tantum duo) in promycelio acrogena, coronae 



ad instar disposita. TillelieiX. 



^ Spora3 solitaria), simplices. 



* Sporie ad apices ramulorum evolutas; massa sporarum pulverulcuta, iu 



/ructibus pustulas pulverulentas, in Ibliis strias pulverulentas effor- 



mans. Tilletia. 



*♦ Spora) hinc illinc in mycelio intercalares; massa sporarum haud pul- 



verulenta. 

 a. Spora3 in pustulas vel tumores buUatos, pallidos vel ferrugineo-brun- 



neos congregatae. Entyloma. 



0. Massa sporarum atra, stratos explanatos, late expansos efformans. Me- 



lanoUenitwi (et Entorrhiza et Ustilar/opsis?). 

 ij§ Spor;e conglobatcie, numerosse in glomerulos arcte conjunctaj. 



* Glomeruli una vel pluribus sporis centralibus, majoribus, saturatius co- 



loratis et pluribus periphericis miuoribus, pallidioribus constituti. 



U7'ocijstis. 

 ** Sporic uniformes, numerosse in glomerulos arcte conglobatae. 



a. Glonieruli tegumento carentes. Tuburcinia. 



b. Glomeruli stratu cellularum sterilium circumtecti. Doassansia. 

 ■'■■]• Sporidiola solitaria (vel catenulata) in promycelio acrogena. 



Tkecaphoreoe. 



a. Sporae geminatae. Schroetcria. 



b. Sporae numerosoe in glomerulos conglobat». Thecaphora. 



C. Promycelium liliforme; sporidiola iguota; spor^B in glomerulos con- 

 giobatae. Sorosporium. 



USTILAGO Pers. Syn. Fung. p. 224 ut subgenus, Fries Syst. Myc. 

 III, p. 017 (Etyni. us(us). Reiicularicv sp. Bull., Farinm^icv sp. 

 Sow., Cceomalis sp. Link, Uredinis sp. auct., Erysibcs sp. Wallr. 

 — Mycelium vegetativum matricem penetrans, mox evanescens; 

 mycelium sporogenum raraosum, gelatinoso-turgescens. Sporre iu 

 raniulis terminalibus botrj^oideis mycelii seriatira, generatfe ma- 

 turitate massaui pulverulentam vel granulosam demum erumpen- 

 tem efformantes. Sporidiola solitaria, plerumque in promycelio pleu- 

 rogena. 



A. Sporse leves. 



1. Ustilago longissima (Sow.) Tul. M(^ra. sur les Ustilag. in Ann. i<v7 

 Scienc. Nat. 1847, p. 70, Fiscli. Aperc. p. 11, Winter Die Pilze 

 p. 85, Schroet. Pilz. Schles. pag. 266, Bref. Untersuch. V, t. 8, 

 fig. 1-14, tab. 9, fig. 8-16, Uredo longissima Sow. Engl. Fung. 



