Melampsora euphorbiae (Ficinus & Schubert) Castagne, 1843

on Euphorbia

Melampsora euphorbiae: uredinia on Euphorbia peplus

Euphorbia peplus, Nieuwendam: plant with uredinia

Melampsora euphorbiae: uredinia on Euphorbia peplus

detail

Melampsora euphorbiae: urediniospores and paraphyses

urediniospores and paraphyses

Melampsora euphorbiae: paraphyses protecting the uredinium

thee heads of the paraphyses form a protective layer over the uredinium

Melampsora euphorbiae: urediniosporeMelampsora euphorbiae: urediniospore

urediniospores (at right an empty one)

Melampsora euphorbiae: paraphyse

paraphyse

Melampsora euphorbiae: telium

one single, dark brown, telium

Melampsora euphorbiae: teliospores

the teliospores stand as a collection of columns under the epidermis

gall

Spermogonia orange. Aecia amphigenous, orange, without a peridium; no paraphyses. Most uredinia hypophyllous, yellow, with many, clavate, paraphyses; the diameter of the head is 14-26 µm. Telia amphigenous, subepidermal, dark brown; they are but rarely forned, except in E. peplus.

host plants

Euphorbiaceae, monophagous

Euphorbia agraria, altissima, anachoreta, arguta, atroppurpurea, aulacosperma, austriaca, azerbajdzhanica, azorica, cardiophylla, carniolica, chamaepeplus, characias, cheiradenia, cyparrissias, dendroides, dulcis, erinacea, esula & subsp. tommasiniana, exigua, falcata, flavicoma, helioscopia, heteradena, hyberna, lamarckii, lathyris, leptocaula, lucida, macroclada, mellifera, myrsinites, nicaeensis & subsp. glareosa + stepposa, orientalis, oxyodonta, palustris, paralias, peplus, petiolata, platyphyllos, x pseudovirgata, pterococca, retusa, reuteriana, rigida, seguieriana, semivillosa, stricta, taurinensis, valerianifolia, verrucosa.

Only rarely on E. helioscopiae

synonyms

Melampsora euphorbiae-cyparissae Müller, 1907; M. euphorbiae-exiguae Müller, 1907; M. euphorbiae-pepli Müller, 1907.

references

Bahcecioglu & Kabaktepe (2012a), Baker (1955a), Blumer (1946a), Brandenburger (1972a), Doppelbaur & Doppelbaur (1968a), Ellis & Ellis (1997a), Erdoğdu, Hüseyin & Suludere (2010a), Gäumann (1959a), Gjaerum (1982a, 1987a), Gjaerum & Dennis (1976a), González-Fragoso (1922a, 1925a), Henderson (2000a, 2004a), Jage, Klenke, Kruse oo (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Kruse & Jage (2014a), Losa España (1942a), Ludwig (1974a), Maier, Begerow, Weiß & Oberwinkler (2003a), Mayor (1971a, 1973a), Negrean (1997a), Negrean & Denchev (2000a), Özaslan, Hüseyin & Erdogdu (2014a), Pellicier (2001a), Poelt & Zwetko (1997a), Riegler-Hager (2002b), Ruszkiewicz-Michalska (2006a), Savchenko, Heluta, Wasser & Nevo (2014c), Săvulescu & Rayss (1935a), Scheuer & Bechter (2012a), Schmid-Heckel (1985a), Scholler, Reinhard & Schubert (1996a), Termorshuizen & Swertz (2011a), Tykhonenko (2010a), Unamuno (1941a,b), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

mod 21.vii.2019