Plant Parasites of Europe

leafminers, galls and fungi

Melampsoridium betulinum

Melampsoridium betulinum (Persoon) Klebahn, 1899

on Larix


spermogonia pale yellow, amphigenous. Aecia hypophyllous, mostly in two rows; fresh peridium orange, up to 0.5 mm high; spores densely and finely verrucose, but with a smooth and thin-walled spot.

spermogonia, aecia

Pinaceae, monophagous

Larix decidua, gmelinii, kaempferi, laricina, potaninii, sibirica.

on Alnus, Betula

Melampsoridium betulinum on Betula pubescens

Betula pubescens, Huijbergen, Staartsche Duinen: uredinia

Melampsoridium betulinum: uredinia on Alus glutinosa

Alnus glutinosa, Nieuwendam: the uredinia are closed except for a central pore, through which the spores are squeezed out in a thread

Melampsoridium betulinum on Alnus glutinosa: urediniospore


Melampsoridium betulinum: urediniospore

Alnus glutinosa, Zeewolde, Harderbos, leg. Hans Jonkman: empty urediniospore

Melampsoridium betulinum: urediniospore

optical section

Melampsoridium betulinum on Betula pubescens: urediniospore

Betula pendula, Nunspeet: urediniospore

p>Melampsoridium betulinum: uredinium, telium

Betula pendula, uit González-Fragoso (1925a): section through a telium, bordering at an uredinium to the right


uredinia finely spinulose, but with a smooth tip. Telia hypophyllous, extensive, orange when fresh; the spores are formed intercellularly, below the epidermis.

uredinia, telia

Betulaceae, oligophagous

Alnus cordata, glutinosa, incana, pendula, viridis; Betula humilis, nana, occidentalis, ovalifolia, papyrifera, pendula, pubescens & var. glabrata + tortuosa, pumila, utilis & var. jacquemontii

Mainly on birch.

Hyperparasite of the uredinia

Ramularia uredinis


Abras, Fassotte, Chandelier & Cavelier (2008a), Adamska (2005a), Bahçecioğlu & Kabaktepe (2012a), Blumer (1946a), Brandenburger (1985a: 18, 53), Doppelbaur & Dobbelbaur (1968a, 1973a), Ellis & Ellis (1997a), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a, 2004a), Huseyin & Selcuk (2004a), Jage, Kruse, Kummer ao (2013a)m Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Maier, Begerow, Weiß & Oberwinkler (2003a), Markovskaja (2013a), McKenzie, Padamsee & Dick (2013a), Mułenko, Sałata & Wołczańska (1995a), Negrean (1997a), Poelt & Zwetko (1997a), Ruszkiewicz-Michalska (2006a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Tykhonenko, Heluta & Dudka (2016a), Vanderweyen (2010a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

Last modified 15.vii.2022