Melampsorella symphyti Bubák, 1903

on Abies

gall

spermogia and aecia hypophyllous in the current year’s needles. Aecia in two rows, rather widely spaced (never more than 16 in a row); peridium less than a mm high. Aeciospores densely covered by small high warts; contents orange-yellow.

spermogonia, aecia

Pinaceae, monophagous

Abies alba.


on Symphytum

Melampsorella symphyti on Symphytum officinale

Symphytum officinale, Belgium, prov. Hainaut, Laplaigne © Sébastien Claerebout: diseased plant

Melampsorella symphyti gall

Symphytum officinale, Dronten; © Arnold Grosscurt

Melampsorella symphyti uredinia

underside of the leaf, with uredinia

Melampsorella symphyti uredinia

Symphytum officinale, Belgium, prov. Hainaut, Papignies: uredinia; © Jean-Yves Baugnée, det Arthur Vandenweyen

Melampsorella symphyti: urediniospore

Symphytum officinale, Nieuwendam: urediniospore

gall

Teliospores are formed intracellulary in the lower epidermis.

uredinia, telia

Boraginaceae, oligophagous

Omphalodes lusitanica; Symphytum asperum, bulbosum, cordatum, ibericum, officinale, peregrinum, tauricum, tuberosum, x uplandicum.

synonyms

Pucciniastrum symphyti (de Candolle) McKenzie & Padamsee, 2014; Thekopsora symphyti (de Candolle) Müller, 2010.

notes

Contrary to the related Melampsorella caryophyllacearum, in Abies the mycelium is restricted to the needles; it does not hibernates, and does not cause witches’ brooms either. But in Symphytum the mycelium is systemic indeed; it hibernates in the rhizome.

references

Brandenburger (1985a: 15), Buhr (1965a), Ellis & Ellis (1997a), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a, 2004a), Klenke & Scholler (2015a), Losa España (1944a), Maier, Begerow, Weiß & Oberwinkler (2003a), Mułenko, Sałata & Wołczańska (1995a), Scheuer & Bechter (2012a), Scholler & Schubert (1993a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

pub 25.iv.2017 · mod 20.ix.2017