338 UREDINEAE. 



U. minor Schroet. On Trifolivm montanum (U.S. America). 

 U. hedysari-obscuri (J). C). On Hcdiisarum in Europe and America. 

 U. scrophulariae (D. (_'.). On Scropltuluria and Verhascum (Britain). 

 U. erythronii (D. (_".). On LiUum, Mxscari, Scilla, Alliimi, Fritillaria. 

 (U.8. America). 



(5) Tiieiitospores alone knoion ; after death of the host they 

 undergo a restinff -period, then germinate : 



U. solidaginis (Somm.). On SoUdago virgaurea. 



U. phyteumatum (D. C'.). On Phyteuma, accompanied by elongation of 

 the leaf-stalk. 



U. scillarum (Grev.). On SciUa and Muscari. (Britain.) 



U. ornithogali Lev. On Ornithogalum and Gagea. (Britain.) 



U. colchici Massee. On Colchicum spectabilis at Kew.^ 



(6) Telcvtospores alone known; germinatiny at onec on the 

 living host : 



U. pallidus Niessl. On Cytisus. 



(7) Only teleutosporcs and 2')ycnidia known ; present on the same 

 host : 



Uromyces Tepperianus Sacc.^ This causes on twigs and 

 branches of Acacia a deformation consisting in an all-round 

 swelling followed by rupture of the periderm and the develop- 

 ment of brown teleutospore patches on the exposed wood. Tepper 

 found in South Australia shrubs of Acacia salicinia and A. 

 myrtifolia attacked and killed; the former, near Adelaide, being 

 almost exterminated. He also found it prevalent on Acacia, 

 spinescens, A. hakioides, and A. myrtifolia in another part of 

 Australia (Murray Bridge). 



The same fungus was found by Warburg on Albizzia montana 

 in Java, likewise by Solms-Laubach and Stahl (Fig. 181). 



Magnus ^ found that Warburg's specimens showed the rupture 

 of the rind only on one side, those of Stahl, however, agreed 

 with the Australian specimens. On investigation of the galls, 

 Magnus found a multiseptate and intercellular mycelium with 

 numerous and somewhat branched haustoria. The formation 



^Grevillea xxi., 1892, p. 0. 



-Liidwig, " Eine iiciic Rostkrankheit australischer Akazien," Centralblalt f. 

 Baiter u. Parasiti iiLim^h , 1S!)0, p. 83; further: Hedwigia, 1889, and Porsi- 

 lich-uaturwiss. Zettsr/i,-//'/, 1.S'.I4. 



■'Magnus, Ber. d. deiUsch. bolan. GeselL, 1892, p. 195; Hennings, Piaigi 

 Warburyiani, Hedwigia, 1893. 



