316 



Micropuccinia; its mycelium penetrates the whole host-plant; Ro- 

 strup has planted rusty Dentaria in flower-pots, and the fungus appe- 

 ared on the same plants in the succeeding year. It is a very rare spe- 

 cies which has only been found in a few places in Central Europe 

 (see Ouds. 85 c. icon., Bubak 08 1■'^ Vgr. Micr. no 770) and in Novaja 

 Semlja (Ouds. 85). 



Dentaria bulbifera. F. Bjarnemose CJe 73 Exs. Thiimen Myc. no 37 see also 

 Lagerh. 95). 



1465. Puccinia Fergussoni Berk. &. Br., Sydow 04 ""'' 

 Micropuccinia, June— Sept. 



Viola epipsila. J. St. Vildmose (Raunkiaer). Viola palustris. J. Flade!, Asaa 

 (O. Paulsen), Sevel!, Harrestrup, Djursland (Christensen Hygum); F. Skaa- 

 rup; S. Teglstruphegn ; and many other places. 



1466. Puccinia violae (Schum.) de C, Sydow 04 ''^^ Syn: Uredo 

 violae Schum. no 1570, Fl. D. tab. 1317, Aecidium violae Pers., Schum. 

 no 1516, Fl. D. tab. 2215, Puce, violarum 0rsted 66 b ^', Puce, depau- 

 perans (Vize) Sydow 04 ''''^, Puce, aegra Grove, Violrust (0rsted 66 b 

 (k R). 



Aut-eu-puccinia; st. I May— July, st. II June— August, st. Ill July— 

 Novb. May occur both on the leaves, petioles, stems and in the flo- 

 wers of many species of Viola. The form on Viola tricolor and Viola 

 cornuta seems to differ a little, the aecidial mycelium looks as if it 

 were perennial and for this reason several mycologists have considered 

 it an autonomous species "Puce, aegra. Puce, depauperans". Liro, 

 however, has by cultivating" experiments (08) proved that it is only 

 the different host-plants which influence the growth of the mycelium 

 in different ways. 



Viola canina, hirta, mirabilis, silvatica, odorata common. Viola stagnina. S. 

 Vjerslev Mose (H. M.). Viola tricolor hortensis. J. Skive!, Viborg (Gad). Viola 

 arvensis. J. Thorsager, Stabelhaj &. Agri Bakker (Christensen Hygum); L. 

 Bredfjord. Viola cornuta. J. Astrup in Sailing!, Ulfborg (Jeppesen); F. Hol- 

 stenshus, Tiselholt; S. Ny Taarbaek (A. B.); B. Renne. Viola Riviniana. S. 

 Tudsenaes. 



1467. Puccinia malvacearum Montagne, Sydow 04 ''^^ Leptopuec. 

 malv. R 02 a 268 c. icon., Stokroserust (R 04 a ""), Lit: Dybdahl 76 b, 

 Neger 06 '^^ Taubenhaus 11. 



Leptopuceinia, on the leaves, petioles and stems of Malvaceae, June 

 -Dec. 



The quickness with which this fungus once spread all over Europe 

 has been mentioned in many places (see "En Rustsvamps Indvandring 

 i Evropa", Tidssk. for pop. Fremst. af Naturvid. R. V, Bd. I ^'"' and 

 R 74 c). It was introduced into Spain from South America in 1869 and 



