Melampsora populnea (Persoon) Karsten, 1879

on Larix, Pinus Papaveraceae

gall

Aecia 1 mm, often confluent, yellow-orange, without a peridium.

spermogonia, aecia

Euphorbiaceae, Papaveraceae, Pinaceae, polyphagous

Chelidonium majus; Corydalis cava & subsp. marschalliana, intermedia, solida; Larix decidua, kaempferi, sibirica; Mercurialis annua, perennis; Papaver dubium; Pinus brutia, halpenenis, mugo, nigra & subsp. laricio, pinaster, sylvestris.


on Populus

Melampsora populnea on Populus spec.

Populus tremula (sucker), Bergen aan Zee; uredinia

Melampsora populnea on Popuus tremula; urediniium, paraphyses

Populus tremula, België, prov. Limburg, Ham, de Rammelaars © Carina Van Steenwinkel: paraphyeses in the uredinium

Melampsora populnea: urediniospores

urediniospores

gall

uredinia mostly hypophyllous, 0.5 mm, yellow, with clavate paraphyses; urediniospores elliptic, very coarsely spinulose. Telia also hypophyllous, sub-epidermal, dark brown.

uredinia, telia

Salicaceae, narrowly monophagous

Populus alba, x canescens, tremula.

synonyms

Melampsora aecidioides, castellana, laricis-tremulae, magnusiana, pinitorqua, pulcherrima, and rostrupii form a complex of species, that collectively is addressed under the name M. populnea. They form strongly resembling uredinia and telia on Popuus sectie Leuce (alba, x canescens, tremula), but aecia on widely divergent plant species. There is no consensus about the taxonomic status of the component species.

The interpretation of M. laricis Hartig, 1885 is not fully clear. According to Brandenburger and the Index Fungorum (2017)it is a junior synonym of populnea, but Klenke & Scholler point to M. caprearum/.

notes

Massive occurence of the uredinia stage, like in 2012, can bring forward a total early leaf fall.

inquilines

Mycodiplosis coniophaga, tremulae

references

Bahcecioglu & Kabaktepe (2012a), Brandenburger (1985a: 18, 38), Buhr (1965a), Chinery (2011a). Gjaerum (1987a), Gjaerum & Dennis (1976a), Henderson (2000a, 2004a), Jost (1987a), Jage, Scholler & Klenke (2010a), Kozłowska, Mułenko & Heluta (2015a), Mułenko, Sałata & Wołczańska (1995a), Negrean (1997a), Redfern & Shirley (2011a), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Scholler & Schubert (1993a), Poelt & Zwetko (1997a), Spooner & Butterfill (1999a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Tykhonenko (2010a), Vanderweyen & Fraiture (2007a), Vialle, Frey, Hambleton, Bernier & Hamelin (2011a), Woods, Stringer, Evans & Chater (2015a).

25/03/2017

pub 25.iii.2017 · mod 16.vii.2017