Puccinia bromina Eriksson, 1899

on Boraginaceae ?

gall

spermogonia and aecia are not known. If host plant alternation does occur at all, it will probably involve Boraginaceae.


on Bromus s.l.

Puccinia bromina: uredinia on Bromus sterilis

Anisantha sterilis, Nieuwendam: upperside uredinia and a few dark brown telia)

Puccinia bromina: telia on Bromus sterilis

underside with telia and a few uredinia

Puccinia bromina: urediniumPuccinia bromina: telia

uredinium and telia

Puccinia bromina: urediniosporesPuccinia bromina: urediniospores

urediniospores

Puccinia bromina: urediniospore

an empty spore clearly shows the spinulation

Puccinia bromina: teliosporesPuccinia bromina: teliospore

teliospores

gall

uredinia brown, up to half a mm long stripes dispersed on (mainly) the upperside of the leaves, occasionally covering the entire surface. Urediniospores spinulose, with 10-12 dispersed germination pores. Telia on the underside of the leaves and on the leaf sheaths, less than a mm large, covered by the epidermis, divided into small compartments by rows of brown paraphyses. Teliospores 2-celled, short-conical, narrowed towards the pedicel; wall smooth, thickened near the tip; pedicel short, persistent.

uredinia, telia

Poaceae, narrowly oligophagous

Anisantha sterilis, tectorum; Bromopsis erecta; Bromus arvensis, hordeaceus, japonicus, lanceolatus, secalinis.

synonyms

many authors, including Termorshuizen & Swertz, and also the Index Fungorum (2016), consider this species conspecific with P. recondita.

references

Alaei, De Backer, Nuytinck, Maes, Höfte & Heungens (2009a), Brandenburger (1985a), Gäumnn (1959a), Klenke & Scholler (2015a), Kruse (2019a), Liu & Hamilton (2013a), Liu, Szabob, Hambleton ao (2013a), Scheuer & Bechter (2012a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2011a).

mod 20.vii.2019