UredinacefE, Uromyees. 559 



tiusculis hyalinis ornatis. brunneis v. castaneis, 22-30 ^ 20-25, epi- 

 sporio crasso; pediceilo hyalino, tenui brevi. 



Ilah. in foliis caulibusque Euphorbia3 dicty os per m se F. 

 et M. in America boreali. — Ab Ur. tuberculato differt verrucis 

 majoribus et acutioribus. 



100. Uromyces tuberculatus Fuck., Symb. myc. p. 64 (1869) ; Tranz- 2198 

 schel, Ann. Mycol VIII (1910) pag. 13; Sydow, Mon. Ured. II 

 (1910) p. 165; Syn. Urom. proeminens Auct. p. p. — Syll. VII, 



p. 563, p. p. — Mycelio generationis gecidinese totam plantam v. 

 ramos inficiente; pycnidiis et rrcidiis hypophyllis, per totum fo- 

 lium SRqualiter sparsis; secidiis contextu foliorum circumdatis, cu- 

 puliformibus, margine denticulato parum emergentibus; cellulis 

 pseudoperidii in sectione longitudinali rhomboideis, pariete externo 

 crasso (circa 7-8 ij,.). striolato, pariete interno tenuiore (3 [j.), dense 

 verruculoso; secidiosporis angulato-globosis v. ellipsoideis, verru- 

 culosis, 17-25^14-20; uredosoris hypophyllis, sparsis, primo epi- 

 dermide tenui tectis, dein nudis, cinnamomeis; uredosporis globo- 

 sis V. subglobosis, flavo-brunneis, aculeolatis, 20-25 [j.. diam., epi- 

 sporio 1,5-2,6 [X. cr., poris germinativis plerumque intumescentibus 

 5-7 prseditis; teleutosoris hypophyllis v. etiam epiphyllis et cau- 

 licolis, plerumque sparsis, interdum in greges parvos congestis, 

 pulverulentis, atro-brunneis v. atris; teleutosporis globosis v. el- 

 lipsoideis, papilla apicali plerumque deficiente v. rarius plana, lata, 

 hyalina, verrucis sat laxe dispositis, late conicis obtusiusculis hya- 

 linis ornatis, castaneis, 20-30 '«' 18-24, episporio 2-2,6 [x. cr.; pe- 

 dicello hyalino, deciduo. 



Hab. in foliis Euphorbise exiguae, in Germania, Gallia, 

 Helvetia, Euph. hissaricre in Turkestania. 



101. Uromyces euphorbiicola (Berk. et Curt.) Tranzschel, Ann. Myc. 2199 

 VIII (1910) p. 8, Trichohasis euphorhicecola Berk. et C, Uredo 

 euphorhifucola (B. et C.) De Toni — Syll. VII, p. 847 — Sydow, 

 Mon. Ured. II 1910) p. 161. — Differt ab Urom. proeminenti et 



ab illis speciebus, statu uredosporico praeditis, uredosporis plerum- 

 que 3 (2-4 rarissime 5) poris germinativis priieditis. 



Hah. in foliis Euphorbite pilulifera? in America bor. efc 

 austr., E. maculatn', America bor.,E. humistratne, Ame- 

 rica bor., E. thymifolias America austr., E. prostratre, A- 

 mer. bor. et in insulis Canariensibus, 



102. Uromyces Polnsettiae Tranzsch., Ann. Myc. VIII (1910) p. 11; 2200 

 Sydow, Mon. Ured. II (1910) pag. 163. — Uromyces Euphorhice 



