New records of Erysiphales and Uredinales from Poland

Puccinia mei-mamillata semad. was found for the first time in Poland on Angelica sylvestris L., Neoerysiphe galeopsidis (Dc.) U. Braun on Melittis melisophyllum L. and Podosphaera xanthii (castagne) U. Braun & N. shishkoff on Physalis alkekengi L. the new collections are described, illustrated and discussed herein. the key to the aecial state of rust fungi on Angelica in Poland is provided. Another four species are known from few localities on their hosts in Poland.


INtroDUctIoN
In the last few years there have been an increase in the number of reports on the occurrence of new species of fungi in Poland as well as on the extending range of native species and their invasion onto new hosts.this especially relates to powdery mildew (Erysiphales), but there are also data on Uredinales, Ustilaginomycetes and anamorphic fungi (e.g.Adamska 2001Adamska , 2005;;Piątek 2003aPiątek ,b, 2005;;Piątek, Wołczańska 2004;ruszkiewicz-Michalska 2006;ruszkiewicz-Michalska, Michalski 2005;Wołczańska 2007;Wołczańska, oklejewicz 2001;Wołczańska, Lamorski 2006;Wołczańska, rozwałka 2005).this phenomenon may stem from natural migration of fungi or the introduction thereof into new areas, from migration of hosts and climatic changes, favorably enabling phytopathogens to develop fully.the present paper adds other plants to the list of hosts of phytopathogenic fungi in Poland and provides new data to their distribution.Detailed descriptions and illustrations are given for the species observed on new hosts: Puccinia mei-mamillata semad.on Angelica sylvestris, Neoerysiphe galeopsidis (Dc.)U. Braun on Melittis melisophyllum and Podosphaera xanthii (castagne) U. Braun & N. shishkoff on Physalis alkekengi.
All the collected specimens have been deposited in the Mycological Herbarium of the Department of Botany and Mycology, University of Maria curie-skłodowska in Lublin (LBL M). the taxonomy and nomenclature of Uredinales are based on the monograph by Majewski (1977Majewski ( , 1979)), and powdery mildews on the monograph and papers by Braun (1987Braun ( , 1995Braun ( , 1999) ) and Braun & takamatsu (2000).the names of plants are taken after Mirek et al. (2002).
RemaRkS. this species was collected in Poland on 32 host plants.In Europe it was noted on Melittis melisophyllum in Austria, france, switzerland and Montenegro (Braun 1995;farr et al. [n.d.]).
RemaRkS.In Poland this species was recorded on this host in opole and Pruszków (sałata 1985).
In connection to the diagnosis proposed by Braun and takamatsu (2000) other specimens reported as Sphaerotheca fusca sensu Braun (1987Braun ( , 1995) ) require revision.In the mycological literature there is only little information about the occurrence of Podosphaera xanthii on Physalis spp.It was recorded under this name only in taiwan (cheng et al. 2006) and as Sphaerotheca xanthii from Bulgaria (farr et al. [n.d.]).
RemaRkS.Puccinia mei-mamillata is a heteroaecious species.so far in Poland aecia of this fungus have been collected only on Mutellina purpurea (Poir.)thell.on Śnieżnik Mt (sudety Mts) and on Babia góra Mt (Beskid Żywiecki Mts) (Majewski 1979) and lately also in the tatra Mountains (Wołczańska, Piątek 2008, mscr.).Urediniospores and teliospores occur on Polygonum bistorta L. in the south and in the middle part of Poland (Majewski 1979) and on Polygonum viviparum L. in the tatra National Park (Beskid) (sałata et al. 1984).on Angelica sylvestris this species has not been collected in Poland so far.It was recorded on this host in the czech republic, Lithuania, Norway, germany, russia and sweden (farr et al. [n.d.]).
In Poland aecia of the following agents of rust fungi can occur on Angelica species (Majewski 1979): Puccinia bistortae Dc., Puccinia polygoni-vivipari karst., Puccinia pimpinellae (str.)röhl.and Puccinia mei-mamillata. the aeciospores of Puccinia mei-mamillata are the smallest and have big, seceding clots.Important differences are also visible in the thickness of peridium cells.P. mei-mamillata has different proportion between the outer and inner peridium walls than Puccinia pimpinellae and the thickness of peridium cell walls of the other species is distinctly smaller (tab.1).RemaRkS.In Poland this species was recorded on this host only in Lipiny near Lubin (Majewski 1979).
RemaRkS.In Poland this species was recorded on this host near Międzyrzec Podlaski (Majewski 1977) and in rymanów (Wołczańska 1994).