Puccinia punctata Link, 1816
on Galium
Galium mollugo, Belgium, prov. Antwerp, Dessel © Carina Van Steenwinkel: leaf spot, upperside
underside; aecia in a compact circle
spermogonia, aecia, and uredinia
another example
aeciospores
urediniospores
urediniospores: surface sculpture
teliospores on Galium mollugo (at left) and G. sylvaticum; from Gäumann (1959a).
gall
Spermogonia amphigenous. Aecia like the spermogonia rarely formed; hypophyllous, in groups on discoloured, sometimes somewhat galled spots, cupulate, with white, recurved margin split into segments and yellow spores. Uredinia and telia generally amphigenous, light and dark brown, respectively. Urediniospores with 2, generally equatorial pores. Teliospores two-celled, 14-39 x 21-67 µm, brown, with apically strongly thickened wall, and a light brown pedicel.
host plants
Rubiaceae, monophagous
Galium album, aparine, aristatum, corrudifolium, glaucum, humifusum, intermedium, lucidum, margaceum, megalospermum, meliodorum, mollugo, odoratum, parisiense, productum, psilophyllum, pumilum, rivale, rotundifolium, rubrum, saxatile, scabrum, spurium, sylvaticum, uliginosum, verum & subsp. glabrescens + wirtgenii.
synonyms
Puccinia deminuta Vleugel, 1908; galii-elliptici Maire, 1901; galii-silvatici Otth, 1904.
notes
Gäumann and Klenke & Scholler recognise within this species several formae speciales.
The difference between P. punctata and P. difformis is unsharp; according to Gäumann the only fundamental difference is the fact that difformis does not form uredinia; but whether the absence of uredinia excludes punctata is not clear. Additional differences are the clustered arrangement of the aecia in punctata and the formation of telia on the stems in difformis. With much hesitation therefore the material illustrated below is attributed punctata.
Galium aparine, Belgium. prov. Limburg, Lommel, Kolonie © Carina Van Steenwinkel
aecia and telia
teliospores
references
Bahçecioğlu & Kabaktepe (2012a), Bahçecioğlu, Kabaktepe & Yildiz (2006a), Beltran Tejera (1976a), Blumer (1946a), Brandenburger (1985a: 508), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Doppelbaur & Doppelbuar (1973a), Gäumann (1959a), Ellis & Ellis (1997a), Erdoğdu, Hüseyin & Suludere (2010a), Gäumann (1959a), Gjaerum (1982a, 1986a), Gjaerum & Sunding (1986a), Gönczö & Révay (1981a), González Fragoso (1924a), Henderson (2000a, 2004a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Kruse & Jage (2014a), Kruse, Thiel, Rätzel, ao (2020a), Losa España (1942a), Ludwig (1974a), Marková & Urban (1988a), Mayor (1971a), Negrean (1997a), Negrean & Denchev (2000a), Poelt & Zwetko (1997a), Redfern & Shirley (2011a), Ruszkiewicz-Michalska (2006a), Savchenko, Heluta, Wasser & Nevo (2014d), Savchenko, Wasser, Heluta & Nevo (2019a), Scheuer & Bechter (2012a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Tomasi (2012a, 2014a), Tóth (1994a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).