Kuehneola uredinis (Link) Arthur, 1906
on Rubus
Rubus fruticosus, Hilversum: many small aecia on the upperside of the leaf (only)
magnified
detail
aeciospores (ø 23 µm)
Rubus ulmifolius, Hungary, Mosonmagyaróvár, 15.vi.2015 © László Érsek: leaf with uredinia
uredinia
fresh, yellow, and old, white, uredinia.
uredinia also on the stems
detail
detail
Rubus fruticosus, Loenen (Ge), © Arnold Grosscurt: leaf with uredinia
urediniospores
teliospores
Rubus fruticosus, Flevoland, Reve-Abbertbos © Hans Jonkman
same leaf, underside with white telia
detail
Rubus caesius, from González-Fragoso (1925a): uredinium (section)
gall
Spermogonia epiphyllous subcuticular pustules, 0.2 mm, on red spots. Aecia epiphyllous, yellow. Uredinia hypophyllous, often extending over the entire leaf, often also on the stems and petioles, yellow, similar to the aecia. The uredinia are not surrounded by paraphyses, which distinguishes them from those of the Phragmidium species on bramble. Telia (occurring quite rarely) hypophyllous, pulvinate, yellow or white; spores in chains of c. 5-7 cells.
host plants
Rosaceae, monophagous
Rubus caesius, canescens, fruticosus, gracilis, hirtus, laciniatus, nemorosus, plicatus, salzmannii, styriacus, ulmifolius, ursinus.
synonyms
Kuehneola albida (Kühn) Magnus, 1899.
references
Bahcecioglu & Kabaktepe (2012a), Bedlan (2021a), Buhr (1965a), Dietrich (2016b), Ellis & Ellis (1997a), Gäumann (1959a), Gjaerum & Sunding (1986a), González-Fragoso (1925a), Helfer (2005a), Henderson (2000a), Jage, Klenke, Kruse oo (2016a), Jage, Kruse, Kummer ao (2013a), Jørstad (1953a), Klenke & Scholler (2014a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Maier, Begerow, Weiß & Oberwinkler (2003a), Melzer, Pittoni, Poelt & Scheuer (1984a), Petrova & Denchev (2004a), Poelt & Zwetko (1997a), Redfern & Shirley (2011a), Ritz, Maier, Oberwinkler & Wissemann (2005a), Schmid-Heckel (1985a), Schön (2014a), Spooner & Butterfill (1999a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).