Gymnosporangium cornutum Arthur, 1911
aecia on Sorbus
Sorbus aucuparia, Ermelose Heide © Arnold Grosscurt: aecium
Sorbus aucuparia, België, prov. Limburg, Genk, de Maten © Carina Van Steenwinkel: aecium
young aecium
peridium wall
detail
aeciospore
gall
The slender, acute peridia, not fraying at their tip, are characteristic.
spermogonia, aecia
Rosaceae, monophagous
Sorbus aucuparia, chamaemespilus, domestica, hybrida, intermedia, latifolia, mougeotii, umbellata.
For a closely similar gall on Sorbus torminalis see Gymnosporangium torminali-juniperini.
telia on Juniperus
Juniperus communis, from González-Fragoso (1925a): teliospores
gall
telia on green, young branches that show few signs of galling; pulvinate, 1-3 mm, chocolate brown at first, later turning orange. When moistened they don’t swell strongly. Spores two-celled with 1-3 germination pores per cell, each one capped by a hyaline papilla.
telia
Cupressaceae, monophagous
Juniperus communis, rigida.
synonyms
Gymnosporangium aucupariae-juniperini Klebahn; G. juniperinum: Gäumann (1959a).
parasite
references
Bahcecioglu & Kabaktepe (2012a), Bellmann (2012a), Blumer (1946a), Brandenburger (1985a: 29), Buhr (1964b), Chinery (2011a), Coulianos & Holmåsen (1991a), Doppelbaur & Doppelbaur (1973a), Ellis & Ellis (1997a: 150), Erdoğdu, Hüseyin & Suludere (2010a), Flores Pedauye, Melero Vara & Pallás Benet (2010a), Gäumann (1959a), González-Fragoso (1925a), Helfer (2005a), Henderson (2000a, 2004a), Jage, Klenke, Kruse oo (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Koops (2013a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Llorens i Villagrasa (1984a), Maier, Begerow, Weiß & Oberwinkler (2003a), Negrean (1997a), Pellicier (2001a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roques, Cleary, Matsiakh & Eschem (2017a), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Ruszkiewicz-Michalska, Tkaczuk, Dynowska, ao (2012a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Unamuno (1941a), Vanderweyen & Fraiture (2008a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).