Podosphaera aphanis (Wallroth) Braun & Takamatsu, 2000

on Rosaceae etc.

Podosphaera aphanis on Rubus fruticosus

Rubus fruticosus, Belgium, prov. Limburg, Houthalen-Hechteren, Hengelhoef © Carina Van Steenwinkel

Podosphaera aphanis on Rubus fruticosus

infected leaf, underside

Podosphaera aphanis: conidia chain

conidia chain

Podosphaera aphanis: conidiophore, appressorium

conidiophore, appressorium

Podosphaera aphanis: conidia

conidia with fibrosin bodies

gall

mycelium amphigenous, often also on stems an then forming a persistent white film, Appressoria indistinct to nipple-shaped. Conidia formed in chains, with fibrosin bodies. Cleistothecia with a single ascus, containing usually eight spores. Appendages numerous, sub-equatorial, 0.3-6 x the diameter, mycelioid, flaccid, septate, mostly unbranched.

hostplants

Rosaceae, (Gentianaceae, Myrtaceae), polyphagous

Acaena magellanica; Agrimonia eupatoria, procera, repens; Alchemilla connivens, glabra, monticola, vulgaris s.l., xanthochlora; Aphanes arvensis; Aremonia agrimonoides; Argentina anserina & subsp. groenlandica; Comarum palustre; Corymbia citriodora; Dasiphora fruticosa; Drymocallis rupestris; Eucalyptus gomphocephala; Fragaria ananassa, chiloensis, moschata, vesca, virginiana, viridis; Exacum macranthum; Geum aleppicum, bulgaricum, coccineum, hispidum, japonicum, kolbianum, laciniatum, molle, montanum, pyrenaicum, rivale, sylvaticum, urbanum; Potentilla alba, anglica, argentea, caulescens, collina, crantzii, erecta, grandiflora, haynaldiana, heptaphylla, hirta, x hybrida, inclinata, indica, intermedia, x mixta, nivea, norvegica, patula, pusilla, recta, reptans, sterilis, thuringiaca, thyrsiflora, wimanniana; Rubus arcticus, caesius, chloocladus, constrictus, fruticosus, hirtus, idaeus, loganobaccus, nessensis, odoratus, plicatus, saxatilis, silesiacus, sulcatus, ulmifolius; Sibbaldia procumbens.

synonyms

Sphaerotheca alchemillae (Gréville) Junell, 1965; S. aphanis (Wallroth) Braun, 1982; S. humilis Léveillé.

notes

next to the typical form a var. hyalina (Braun) Braun & Takamitsu, 2000 is distinghuished with hyaline and usually very short appendages; both forms may occur on the same host species.

references

Blumer (1967a), Brandenburger (1985a), Braun (1995a), Braun, Ale-Agha, Bolay, Boyle, Brielmaier-Liebetanz, Emgenbroich, Kruse & Kummer (2009a), Braun & Cook (2012a), Bresinsky (2016a), Czerniawska (2001a), Czerniawska, Madej, Adamska ao (2000a), Dietrich (2016b), Dynowska, Fiedorowicz & Kubiak (1999a), Ellis & Ellis (1997), Fraiture & Vanderweyen (2009a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a), Kruse & Jage (2014a), Losa España (1942a), Mułenko, Sałata & Wołczańska (1995a), Redfern & Shirley (2011), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Scheuer & Bechter (2012a), Scholler, Reinhard & Schubert (1996a), Scholler & Schubert (1993a), Talgø, Sundheim, Gjærum ao (2010a).

15/05/2017

pub 25.v.2017 · mod 13.viii.2017