Endophyllum sempervivi (Albertini & Schweinitz) de Bary, 1863
Sempervivum tectorum, Belgium, prov. Liège, Ferrières, 20.iv.2012 © Jean-Yves Baugnée
detail with telia (here as small pits)
Sempervivum spec., Italy, Aosta, vii.2013 © Ben van As
Aeonium spec., Canary IsLlands, Tenerife, RN Teno, 9.ii.2020 © Sébastien Carbonelle
Endophyllum species have but two spore stages: spermogonia and aecia. The spermogonia are largely sunken into the leaf tissue, only protruding as small, brown cones. Infested leaves often are strongly elongated.
As demonstrated by the pictures above, this, or a closely related, species also occurs on Aeonium.
Can destroy the plant. Only the leaves that have been formed in early summer are affected. Diseased leaves are highly attractive to aphids.
Bahcecioglu & Kabaktepe (2012a), Bellmann (2012a), Blumer (1946a), Buhr (1965a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a, 2004a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2019a), Ljaljević Grbić, Lakušić, Stupar & Vukojević (2016a), Llorens i Villagrasa (1984a), Maier, Wingfield, Mennicken & Wingfield (2007a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Scheuer & Bechter (2012a), Termorshuizen & Swertz (2011a), Unamuno (1941a), Vanderweyen & Fraiture (2008a), Zwetko (2000a).