Chrysomyxa rhododendri (de Candolle) de Bary, 1879

Fungi, Basidiomycota, Pucciniomycetes, Pucciniales, Coleosporiaceae

on Picea

gall

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 (17)21-25(45) x (12)17-21(22) µm, wall with a short fine spinulation, usually except for a smooth length stripe.

spermogonia, aecia

Pinaceae, monophagous

Picea abies, engelmannii, glauca, jezoensis x sitchensis, mariana, omorkika, pungens, retroflexa, sitchensis, wilsonii.


on Rhododendron

Chrysomyxa rhododendri: uredinium

Rhododendron ferrugineum, from González-Fragoso (1925a): uredinium (section)

Chrysomyxa rhododendri: telium

section through part of a telium; of of the spores already has germinated

gall

both uredinia and telia usually at the underside of the leaf, both bearing spores in chains. The content of thre urediniospores is orange coloured.

uredinia, telia

Ericaceae, practically monophagous

Rhododendron ferrugineum, hirsutum, intermedium;

in gardens and nurseries also: Hymenanthes maxima; Rhododendron dauricum, intermedium, kaempferi, kiusianum, lapponicum, linearifolium, myrtifolium, oldhamii, ponticum, simsii, “suave”

synonyms

Chrysomyxa ledi var. rhododendri.

references

Blumer (1946a), Brandenburger (1985a: 20), Crane (2001a), Feau, Vialle, Allaire, Maier & Hamelin (2011a), Gaumann (1957a), González-Fragoso (1925a), Henderson (2000a, 2004a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Llorens i Villagrasa (1984a), Mayor (1970a), Termorshuizen & Swertz (2011a), Kruse (2014a), Maier, Begerow, Weiß & Oberwinkler (2003a), Nierhaus-Wunderwald (2000a), Pellicier (2001a), Poelt & Zwetko (1997a), Schmid-Heckel (1985a), Tomasi (2003a).

27/05/2017

mod 17.vii.2017