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