Phragmidium rubi-idaei (de Candolle) Karsten, 1879

on Rubus

Rubus idaeus, Belgium, prov. Liège, Büllingen, Vallée de la Holzwarche © Carina Van Steenwinkel

same leaf, underside

orange uredinia and black telia

young uredinium, surrounded by paraphyses

paraphyses

urediniospores

youg telium, equally surrounded by paraphyses

telium

teliospores

teliospores

Rubus idaeus, uit González-Fragoso (1925a): small telium

teliospores

gall

no alternation of host plant. Spermogonia near the aecia, between epidermis and cuticula. Aecia epiphyllous, yellow in circular groups, without a peridium but with a circle of hyaline, sausage-shaped curved paraphyses; spores produced in chains, sparsely spinulose. Uredinia hypophyllous, small, 0.2 mm, equally encircled by paraphyses, spores single, pedicellate. Telia hypophyllous black; spores long pedicellate, elliptic, dark brown, transversely divided into c.6, finely verrucose cells, terminated by a blunt papilla; the spore pedicels swell when in contact with water.

host plants

Rosaceae, narrowly monophagous

Rubus idaeus, spectabilis.

references

Bahcecioglu & Kabaktepe (2012a), Blumer (1946a), Buhr (1965a), Cunningham (1945a), Doppelbaur & Doppelbaur (1973a), Ellis & Ellis (1997a), Gäumann (1959a), González-Fragoso (1925a), Helfer (2005a), Henderson (2000a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Losa España (1942a), Negrean (1997a), Maier, Begerow, Weiß & Oberwinkler (2003a), Petrova & Denchev (2004a), Poelt & Zwetko (1997a), Redfern & Shirley (2011a), Riegler-Hager (2014a), Ritz, Maier, Oberwinkler & Wissemann (2005a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).