Gymnosporangium cornutum Arthur, 1911

on Sorbus

Gymnosporangium cornutum

Sorbus aucuparia, Ermelose Heide; © Arnold Grosscurt: aecium

Gymnosporangium cornutum: aecium on Sorbus aucuparia

Sorbus aucuparia, België, prov. Limburg, Genk, de Maten © Carina Van Steenwinkel: aecium

Gymnosporangium cornutum: young aecium on Sorbus aucuparia

young aeckium

Gymnosporangium cornutum: peridium cells

peridum wall

Gymnosporangium cornutum: peridium cells, detail

detail

Gymnosporangium cornutum: aeciospore

aeciospore

gall

The slender, acute peridia, not fraying at their tip, are characteristic.

spermogonia, aecia

Rosaceae, monphagous

Sorbus aucuparia, chamaemespilus, domestica, hybrida, intermedia, latifolia, mougeotii, umbellata.

For a closely similar gall on Sorbus torminalis see Gymnosporangium torminali-juniperini.


on Juniperus

Gymnosporangium cornutum: teliospores

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).

references

Bahcecioglu & Kabaktepe (2012a), Bellmann (2012a), Blumer (1946a), Brandenburger (1985a: 29), Buhr (1964b), Chinery (2011a), Coulianos & Holmåsen (1991a), Doppelbauer & Doppelbaur (1973a), Erdoğdu, Hüseyin & Suludere (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), Llorens i Villagrasa (1984a), Maier, Begerow, Weiß & Oberwinkler (2003a), Negrean (1997a), Pellicier (2001a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Unamuno (1941a), Vanderweyen & Fraiture (2008a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

27/05/2017

pub 27.v.2017 · mod 10.viii.2017