Chrysomyxa empetri J. Schröter ex Cummins, 1956

Fungi, Basidiomycota, Pucciniomycetes, Pucciniales, Coleosporiaceae

on Picea

gall

Aecia yellow. Needles not deformed, but with broad yellow transverse zones, sometimes almost the whole needle yellowed. Here emerge the up to 3 mm lang pseudoperidia as flatted white tubules. Aeciospores yellow, (27)42(54) x (22)27(32) µm, wall densely and rather coarsely warty.

spermogonia, aecia

Pinaceae, monophagous

Picea abies, glauca, rubens.


on Empetrum

gall

uredinia at the outside of the inrolled leaf, orange; urediniospores orange, in short chains. Telia in spring on the outside of the inrolled leaves, yellow, cushion-shaped, waxy, up to 3 mm long. Teliospores with yellow contents, in chains of 3-6 cells, 19-24 x 18-21 µm.

uredinia, telia

Ericaceae, monophagous

Empetrum hermaphroditum, nigrum.

notes

In Switzerland the fungus almost exclusively occurs in the uredinial/telial stage (Nierhaus-Wunderwald, 2000a).

references

Feau, Vialle, Allaire, Maier & Hamelin (2011a), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a, 2004a), Klenke & Scholler (2015a), Maier, Wingfield, Mennicken & Wingfield (2007a), Nierhaus-Wunderwald (2000a), Poelt & Zwetko (1997a), Termorshuizen & Swertz (2011a), Woods, Stringer, Evans & Chater (2015a).

25/04/2017

mod 10.xi.2017