Hypodermeas, UstilaginefB. Ustilago. ?83 



6. Ustliago Avenae (Pers.) Jens. Charb, Cereal. 1889, p. 4, Rostr. Ust. iiei 

 Daniee p. 25, Keil. et Sw. II Rep. Agr. Kans. p. 214, 216, t. IV, 



V, U. segetum Auct. p. p. (in Ai:>ena). — Massa sporarum laxiu- 

 scula, atro-brunnea; sporis globosis vel breve ovoideis, 6-8 ;j.. diam. 

 vel 7-9 s 6-7, tenuiter verruculoso-punctatis, germinando proraj- 

 celium articulatum, ad articulos sporidiola oblonga mox gigneos 

 efficientibus. 



Hab. in ovariis Avenae sativse, orientalis, fatu^e, stri- 

 gosae in Europa, Amer. bor. — Var. levls KelJ. et Swingle 1. c. 

 p. 25, t. V, f. 56-60: sporis omnino levibus, paullo obscurioribus. 

 Cura specie sed rarior in Amer. bor. 



7. Ustilago perennans Rostr. Llst. Dan. p. 25. — Mycelio in rhyzo- iig2 

 mate nutricis perennante; sporis globosis, levibus vel vix asperu- 



lis; promycelio ad septa constricto ibique sporidiola gerente; spo- 

 ridiolis dein utrinque geraraantibus; cetera JJst. Avencc. 

 Hab. in iuflorescentia Avena) elatioris in Dania. 



S. Ustilago Tritici (Pers.) Jens. in Kell. et Sw. II Rep. Agr. Kans. ii63 

 p. 262 et 214, t. II et VI, Ur. segetum b. Ur. Tritici Pers. Syn 

 p. 224, Ust. Hordei Bref. p. p., Usf. segetum Auct. p. p. — Massa 

 sporarum atro-brunneo-oiivacea, laxa ; sporis ovoideis, ellipsoideis 

 V. subgiobosis, 5,5-7,5:^5-6, minutissime verruculosis, suboiivaceis, 

 germinando promycelium ramosum, septatum emittentibus ; spori- 

 diolis hucusque non visis. 



Ilab. in ovariis Tritici sativi in Europa et Araer. bor. 



0. Ustllago nuda (Jens.) Keil. et Swingle II, Rep. Agr. Kans. p. 215 ii64 

 et 277, t. II, f. 7-17, Ust. segeium Auct. p. p,, Ust. nuda Hordei 

 Jens. in iitt, — Massa sporarum brunneo-olivacea, laxa mox libe- 

 ra; sporis ovoideis, ellipsoideis vel subglobosis, 5-7 ^; 5-6,5, suboli- 

 vaceis, germinando proraycelium parce ramosum, apicibus saepe in- 

 flatum gignentibus; sporidiolis hucusque non visis. 



Hab. in ovariis Hordei vulgaris in Europa Amer. bor., Ja- 

 ponia. — Ust. Osmundce Peck. — Syll. VII, 2, p. 468, teste ipso 

 auctore (42 Rep. p. 31), est potius forma Uredinis aberrans. 



10. Ustllago Hordel (Pers.) Keil. et Sw. II, Rep. Agr. Kans, p. 215 ncs 

 et 268, tab. II, f. 2-6, Uredo segetum a, U. Hordei Pers. Syn. 

 p. 224, Ustilago Jensenii Rostr. Ustil. Daii. p. 24, Ust. segetum 

 v. Hordei f. tecla Jens., Ust. Hordei v. tecta Jens., Ust. segefum 

 Auct. p. p. — Massa sporarum nigra. corapactiuscula, intra ova- 

 ria inciusa; sporis globosis, obtuse angulatis, 6,5-7,5 a. diam., le- 



