Sanguisorba minor, Amstelveen, Thijsse-park: cleistothecium

cleistothecium

cleistothecium, peridium

gall

mycelium amphigenous, also on other parts of the plant, white, later brown. Appressoria indistinct. Conidia formed in chains, with fibrosin bodies. Cleistothecia often in dense groups forming dark patches; they contain a single ascus with usually 8 spores. Appendages numerous, a large part inserted above the equator, 1-6 x the diameter; they are unbranched, brown, septate, stiff, curved.

host plants

Rosaceae, oligophagous

Sanguisorba alpina, canadensis, minor & subsp. balearica, officinalis, verrucosa; Sarcopoterium spinosum.

synonyms

Sphaerotheca ferruginea (Schlechtendal) Junell, 1965; Sphaerotheca sanguisorbae (de Candolle) Blumer, 1933.

references

Blumer (1946a, 1967a), Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Dauphin & Aniotsbehere (1997a), Doppelbaur & Doppelbaur (1973a), Ellis & Ellis (1997a), Hafellner (1980a), Jage, Klenke & Kummer (2010a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Leysen (2017a), Özaslan, Hüseyin & Erdogdu (2014a), Ruszkiewicz (2000a), Ruszkiewicz-Michalska (2006a), Ruszkiewicz-Michalska & Michalski (2005a), Schmid-Heckel (1985a).