Puccinia commutata Sydow & Sydow, 1902
on Valeriana
Valeriana excelsa, Belgium, prov. Luxembourg, Gouvy, Langlire, 13.vii.2018 @ Sébastien Carbonelle: aecia (Valeriana repens according to the flora by Lambinon ao, 2004a)
Valeriana officinalis, Belgium, prov. Antwerp, Balen, de Vennen. 1.v.2016 © Carina Van Steenwinkel: aecia
also the rachis is galled
aecia
aeciospores; Gäumann notes that the warts at the one side are coarser than at the other
Valeriana officinalis, England, Berks, VC22: aecia; © Malcolm Storey, BioImages
telia
gall
No host plant alternation; uredinia are missing. Aecia and telia predominantly hypophyllous, often also on deformed parts of petioles and stem. Aecia in elongate groups, cupulate, orange; spores 12-18 x 12-21 µm ø. Telia small, dark brown, spores two-celled on a deciduous pedicel of 16-42 µm in length.
host plants
Caprifoliaceae, monophagous
Valeriana excelsa & subsp. sambucifolia, montana, officinalis, procurrens, tripteris.
notes
the spore measurements for the Belgian material pictured above were 17-18 x 20-24 µm, higher than indicated for this species.
references
Blumer (1946a), Brandenburger (1985a: 595), Buhr (1964b), Ellis & Ellis (1997a), Gäumann (1959a), González Fragoso (1924a), Henderson (2000a), Klenke & Scholler (2015a), Kruse (2019a), Poelt & Zwetko (1997a), Redfern & Shirley (2011a), Roskam (2009a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).